diff --git a/client/components/cards/LazyBookCard.vue b/client/components/cards/LazyBookCard.vue
index c3a8153b..a92278a0 100644
--- a/client/components/cards/LazyBookCard.vue
+++ b/client/components/cards/LazyBookCard.vue
@@ -325,7 +325,7 @@ export default {
     },
     displaySubtitle() {
       if (!this.libraryItem) return '\u00A0'
-      if (this.collapsedSeries) return this.collapsedSeries.numBooks === 1 ? '1 book' : `${this.collapsedSeries.numBooks} books`
+      if (this.collapsedSeries) return `${this.collapsedSeries.numBooks} ${this.$strings.LabelBooks}`
       if (this.mediaMetadata.subtitle) return this.mediaMetadata.subtitle
       if (this.mediaMetadata.seriesName) return this.mediaMetadata.seriesName
       return ''
diff --git a/client/components/controls/LibraryFilterSelect.vue b/client/components/controls/LibraryFilterSelect.vue
index ba96f103..2d9ced5a 100644
--- a/client/components/controls/LibraryFilterSelect.vue
+++ b/client/components/controls/LibraryFilterSelect.vue
@@ -413,21 +413,17 @@ export default {
           id: 'isbn',
           name: 'ISBN'
         },
-        {
-          id: 'subtitle',
-          name: this.$strings.LabelSubtitle
-        },
         {
           id: 'authors',
           name: this.$strings.LabelAuthor
         },
         {
-          id: 'publishedYear',
-          name: this.$strings.LabelPublishYear
+          id: 'chapters',
+          name: this.$strings.LabelChapters
         },
         {
-          id: 'series',
-          name: this.$strings.LabelSeries
+          id: 'cover',
+          name: this.$strings.LabelCover
         },
         {
           id: 'description',
@@ -438,24 +434,32 @@ export default {
           name: this.$strings.LabelGenres
         },
         {
-          id: 'tags',
-          name: this.$strings.LabelTags
+          id: 'language',
+          name: this.$strings.LabelLanguage
         },
         {
           id: 'narrators',
           name: this.$strings.LabelNarrator
         },
+        {
+          id: 'publishedYear',
+          name: this.$strings.LabelPublishYear
+        },
         {
           id: 'publisher',
           name: this.$strings.LabelPublisher
         },
         {
-          id: 'language',
-          name: this.$strings.LabelLanguage
+          id: 'series',
+          name: this.$strings.LabelSeries
         },
         {
-          id: 'cover',
-          name: this.$strings.LabelCover
+          id: 'subtitle',
+          name: this.$strings.LabelSubtitle
+        },
+        {
+          id: 'tags',
+          name: this.$strings.LabelTags
         }
       ]
     },
diff --git a/client/components/modals/item/tabs/Tools.vue b/client/components/modals/item/tabs/Tools.vue
index ad9435c4..5f148c3d 100644
--- a/client/components/modals/item/tabs/Tools.vue
+++ b/client/components/modals/item/tabs/Tools.vue
@@ -33,18 +33,18 @@
             <span class="material-symbols text-lg ml-2">launch</span>
           </ui-btn>
 
-          <ui-btn v-if="!isMetadataEmbedQueued && !isEmbedTaskRunning" class="w-full mt-4" small @click.stop="quickEmbed">Quick Embed</ui-btn>
+          <ui-btn v-if="!isMetadataEmbedQueued && !isEmbedTaskRunning" class="w-full mt-4" small @click.stop="quickEmbed">{{ $strings.ButtonQuickEmbed }}</ui-btn>
         </div>
       </div>
 
       <!-- queued alert -->
       <widgets-alert v-if="isMetadataEmbedQueued" type="warning" class="mt-4">
-        <p class="text-lg">Queued for metadata embed ({{ queuedEmbedLIds.length }} in queue)</p>
+        <p class="text-lg">{{ $getString('MessageQuickEmbedQueue', [queuedEmbedLIds.length]) }}</p>
       </widgets-alert>
 
       <!-- processing alert -->
       <widgets-alert v-if="isEmbedTaskRunning" type="warning" class="mt-4">
-        <p class="text-lg">Currently embedding metadata</p>
+        <p class="text-lg">{{ $strings.MessageQuickEmbedInProgress }}</p>
       </widgets-alert>
     </div>
 
@@ -113,7 +113,7 @@ export default {
   methods: {
     quickEmbed() {
       const payload = {
-        message: 'Warning! Quick embed will not backup your audio files. Make sure that you have a backup of your audio files. <br><br>Would you like to continue?',
+        message: this.$strings.MessageConfirmQuickEmbed,
         callback: (confirmed) => {
           if (confirmed) {
             this.$axios
diff --git a/client/components/modals/notification/NotificationEditModal.vue b/client/components/modals/notification/NotificationEditModal.vue
index 32fa20ea..83b5a9d0 100644
--- a/client/components/modals/notification/NotificationEditModal.vue
+++ b/client/components/modals/notification/NotificationEditModal.vue
@@ -77,7 +77,13 @@ export default {
       return this.notificationData.events || []
     },
     eventOptions() {
-      return this.notificationEvents.map((e) => ({ value: e.name, text: e.name, subtext: e.description }))
+      return this.notificationEvents.map((e) => {
+        return {
+          value: e.name,
+          text: e.name,
+          subtext: this.$strings[e.descriptionKey] || e.description
+        }
+      })
     },
     selectedEventData() {
       return this.notificationEvents.find((e) => e.name === this.newNotification.eventName)
diff --git a/client/components/widgets/AlreadyInLibraryIndicator.vue b/client/components/widgets/AlreadyInLibraryIndicator.vue
index 14f2143d..cb6bfb30 100644
--- a/client/components/widgets/AlreadyInLibraryIndicator.vue
+++ b/client/components/widgets/AlreadyInLibraryIndicator.vue
@@ -1,14 +1,11 @@
 <template>
-  <ui-tooltip v-if="alreadyInLibrary" :text="$strings.LabelAlreadyInYourLibrary" direction="top">
-    <span class="material-symbols ml-1 text-success" style="font-size: 0.8rem">check_circle</span>
+  <ui-tooltip :text="$strings.LabelAlreadyInYourLibrary" direction="top" class="inline-flex">
+    <span class="material-symbols ml-1 text-sm text-success">check_circle</span>
   </ui-tooltip>
 </template>
 
 <script>
 export default {
-  props: {
-    alreadyInLibrary: Boolean
-  },
   data() {
     return {}
   },
diff --git a/client/package-lock.json b/client/package-lock.json
index 4c6df795..073ca445 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "audiobookshelf-client",
-  "version": "2.14.0",
+  "version": "2.15.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "audiobookshelf-client",
-      "version": "2.14.0",
+      "version": "2.15.0",
       "license": "ISC",
       "dependencies": {
         "@nuxtjs/axios": "^5.13.6",
diff --git a/client/package.json b/client/package.json
index ab70a30b..626895e0 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf-client",
-  "version": "2.14.0",
+  "version": "2.15.0",
   "buildNumber": 1,
   "description": "Self-hosted audiobook and podcast client",
   "main": "index.js",
diff --git a/client/pages/audiobook/_id/manage.vue b/client/pages/audiobook/_id/manage.vue
index 7de82b51..56d78d1c 100644
--- a/client/pages/audiobook/_id/manage.vue
+++ b/client/pages/audiobook/_id/manage.vue
@@ -63,11 +63,11 @@
     <div class="w-full max-w-4xl mx-auto">
       <!-- queued alert -->
       <widgets-alert v-if="isMetadataEmbedQueued" type="warning" class="mb-4">
-        <p class="text-lg">Audiobook is queued for metadata embed ({{ queuedEmbedLIds.length }} in queue)</p>
+        <p class="text-lg">{{ $getString('MessageEmbedQueue', [queuedEmbedLIds.length]) }}</p>
       </widgets-alert>
       <!-- metadata embed action buttons -->
       <div v-else-if="isEmbedTool" class="w-full flex justify-end items-center mb-4">
-        <ui-checkbox v-if="!isTaskFinished" v-model="shouldBackupAudioFiles" :disabled="processing" label="Backup audio files" medium checkbox-bg="bg" label-class="pl-2 text-base md:text-lg" @input="toggleBackupAudioFiles" />
+        <ui-checkbox v-if="!isTaskFinished" v-model="shouldBackupAudioFiles" :disabled="processing" :label="$strings.LabelBackupAudioFiles" medium checkbox-bg="bg" label-class="pl-2 text-base md:text-lg" @input="toggleBackupAudioFiles" />
 
         <div class="flex-grow" />
 
@@ -78,7 +78,7 @@
       <!-- m4b embed action buttons -->
       <div v-else class="w-full flex items-center mb-4">
         <button :disabled="processing" class="text-sm uppercase text-gray-200 flex items-center pt-px pl-1 pr-2 hover:bg-white/5 rounded-md" @click="showEncodeOptions = !showEncodeOptions">
-          <span class="material-symbols text-xl">{{ showEncodeOptions || usingCustomEncodeOptions ? 'check_box' : 'check_box_outline_blank' }}</span> <span class="pl-1">Use Advanced Options</span>
+          <span class="material-symbols text-xl">{{ showEncodeOptions || usingCustomEncodeOptions ? 'check_box' : 'check_box_outline_blank' }}</span> <span class="pl-1">{{ $strings.LabelUseAdvancedOptions }}</span>
         </button>
 
         <div class="flex-grow" />
@@ -94,11 +94,11 @@
         <transition name="slide">
           <div v-if="showEncodeOptions || usingCustomEncodeOptions" class="mb-4 pb-4 border-b border-white/10">
             <div class="flex flex-wrap -mx-2">
-              <ui-text-input-with-label ref="bitrateInput" v-model="encodingOptions.bitrate" :disabled="processing || isTaskFinished" :label="'Audio Bitrate (e.g. 128k)'" class="m-2 max-w-40" @input="bitrateChanged" />
-              <ui-text-input-with-label ref="channelsInput" v-model="encodingOptions.channels" :disabled="processing || isTaskFinished" :label="'Audio Channels (1 or 2)'" class="m-2 max-w-40" @input="channelsChanged" />
-              <ui-text-input-with-label ref="codecInput" v-model="encodingOptions.codec" :disabled="processing || isTaskFinished" :label="'Audio Codec'" class="m-2 max-w-40" @input="codecChanged" />
+              <ui-text-input-with-label ref="bitrateInput" v-model="encodingOptions.bitrate" :disabled="processing || isTaskFinished" :label="$strings.LabelAudioBitrate" class="m-2 max-w-40" @input="bitrateChanged" />
+              <ui-text-input-with-label ref="channelsInput" v-model="encodingOptions.channels" :disabled="processing || isTaskFinished" :label="$strings.LabelAudioChannels" class="m-2 max-w-40" @input="channelsChanged" />
+              <ui-text-input-with-label ref="codecInput" v-model="encodingOptions.codec" :disabled="processing || isTaskFinished" :label="$strings.LabelAudioCodec" class="m-2 max-w-40" @input="codecChanged" />
             </div>
-            <p class="text-sm text-warning">Warning: Do not update these settings unless you are familiar with ffmpeg encoding options.</p>
+            <p class="text-sm text-warning">{{ $strings.LabelEncodingWarningAdvancedSettings }}</p>
           </div>
         </transition>
       </div>
@@ -106,36 +106,36 @@
       <div class="mb-4">
         <div v-if="isEmbedTool" class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
-          <p class="text-gray-200 ml-2">Metadata will be embedded in the audio tracks inside your audiobook folder.</p>
+          <p class="text-gray-200 ml-2">{{ $strings.LabelEncodingInfoEmbedded }}</p>
         </div>
         <div v-else class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
           <p class="text-gray-200 ml-2">
-            Finished M4B will be put into your audiobook folder at <span class="rounded-md bg-neutral-600 text-sm text-white py-0.5 px-1 font-mono">.../{{ libraryItemRelPath }}/</span>.
+            {{ $strings.LabelEncodingFinishedM4B }} <span class="rounded-md bg-neutral-600 text-sm text-white py-0.5 px-1 font-mono">.../{{ libraryItemRelPath }}/</span>.
           </p>
         </div>
 
         <div v-if="shouldBackupAudioFiles || isM4BTool" class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
           <p class="text-gray-200 ml-2">
-            A backup of your original audio files will be stored in <span class="rounded-md bg-neutral-600 text-sm text-white py-0.5 px-1 font-mono">/metadata/cache/items/{{ libraryItemId }}/</span>. Make sure to periodically purge items cache.
+            {{ $strings.LabelEncodingBackupLocation }} <span class="rounded-md bg-neutral-600 text-sm text-white py-0.5 px-1 font-mono">/metadata/cache/items/{{ libraryItemId }}/</span>. {{ $strings.LabelEncodingClearItemCache }}
           </p>
         </div>
         <div v-if="isEmbedTool && audioFiles.length > 1" class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
-          <p class="text-gray-200 ml-2">Chapters are not embedded in multi-track audiobooks.</p>
+          <p class="text-gray-200 ml-2">{{ $strings.LabelEncodingChaptersNotEmbedded }}</p>
         </div>
         <div v-if="isM4BTool" class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
-          <p class="text-gray-200 ml-2">Encoding can take up to 30 minutes.</p>
+          <p class="text-gray-200 ml-2">{{ $strings.LabelEncodingTimeWarning }}</p>
         </div>
         <div v-if="isM4BTool" class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
-          <p class="text-gray-200 ml-2">If you have the watcher disabled you will need to re-scan this audiobook afterwards.</p>
+          <p class="text-gray-200 ml-2">{{ $strings.LabelEncodingWatcherDisabled }}</p>
         </div>
         <div class="flex items-start mb-2">
           <span class="material-symbols text-base text-warning pt-1">star</span>
-          <p class="text-gray-200 ml-2">Once the task is started you can navigate away from this page.</p>
+          <p class="text-gray-200 ml-2">{{ $strings.LabelEncodingStartedNavigation }}</p>
         </div>
       </div>
     </div>
@@ -269,11 +269,11 @@ export default {
     },
     availableTools() {
       if (this.isSingleM4b) {
-        return [{ value: 'embed', text: 'Embed Metadata' }]
+        return [{ value: 'embed', text: this.$strings.LabelToolsEmbedMetadata }]
       } else {
         return [
-          { value: 'embed', text: 'Embed Metadata' },
-          { value: 'm4b', text: 'M4B Encoder' }
+          { value: 'embed', text: this.$strings.LabelToolsEmbedMetadata },
+          { value: 'm4b', text: this.$strings.LabelToolsM4bEncoder }
         ]
       }
     },
@@ -370,7 +370,7 @@ export default {
     },
     embedClick() {
       const payload = {
-        message: `Are you sure you want to embed metadata in ${this.audioFiles.length} audio files?`,
+        message: this.$getString('MessageConfirmEmbedMetadataInAudioFiles', [this.audioFiles.length]),
         callback: (confirmed) => {
           if (confirmed) {
             this.updateAudioFileMetadata()
diff --git a/client/pages/config/log.vue b/client/pages/config/log.vue
index 41df00e2..4015a9f6 100644
--- a/client/pages/config/log.vue
+++ b/client/pages/config/log.vue
@@ -10,9 +10,9 @@
       </template>
 
       <div class="flex justify-between mb-2 place-items-end">
-        <ui-text-input ref="input" v-model="search" placeholder="Search filter.." @input="inputUpdate" clearable class="w-full sm:w-40 h-8 text-sm sm:mb-0" />
+        <ui-text-input ref="input" v-model="search" :placeholder="$strings.PlaceholderSearch" @input="inputUpdate" clearable class="w-full sm:w-40 h-8 text-sm sm:mb-0" />
 
-        <ui-dropdown v-model="newServerSettings.logLevel" label="Server Log Level" :items="logLevelItems" @input="logLevelUpdated" class="w-full sm:w-44" />
+        <ui-dropdown v-model="newServerSettings.logLevel" :label="$strings.LabelServerLogLevel" :items="logLevelItems" @input="logLevelUpdated" class="w-full sm:w-44" />
       </div>
 
       <div class="relative">
diff --git a/client/pages/library/_library/podcast/search.vue b/client/pages/library/_library/podcast/search.vue
index b80ca2f8..37ceeee0 100644
--- a/client/pages/library/_library/podcast/search.vue
+++ b/client/pages/library/_library/podcast/search.vue
@@ -5,7 +5,7 @@
     <div id="bookshelf" class="w-full overflow-y-auto px-2 py-6 sm:px-4 md:p-12 relative">
       <div class="w-full max-w-4xl mx-auto flex">
         <form @submit.prevent="submit" class="flex flex-grow">
-          <ui-text-input v-model="searchInput" type="search" :disabled="processing" placeholder="Enter search term or RSS feed URL" class="flex-grow mr-2 text-sm md:text-base" />
+          <ui-text-input v-model="searchInput" type="search" :disabled="processing" :placeholder="$strings.MessagePodcastSearchField" class="flex-grow mr-2 text-sm md:text-base" />
           <ui-btn type="submit" :disabled="processing" class="hidden md:block">{{ $strings.ButtonSubmit }}</ui-btn>
           <ui-btn type="submit" :disabled="processing" class="block md:hidden" small>{{ $strings.ButtonSubmit }}</ui-btn>
         </form>
@@ -22,7 +22,7 @@
               <div class="flex items-center">
                 <a :href="podcast.pageUrl" class="text-base md:text-lg text-gray-200 hover:underline" target="_blank" @click.stop>{{ podcast.title }}</a>
                 <widgets-explicit-indicator v-if="podcast.explicit" />
-                <widgets-already-in-library-indicator :already-in-library="podcast.alreadyInLibrary" />
+                <widgets-already-in-library-indicator v-if="podcast.alreadyInLibrary" />
               </div>
               <p class="text-sm md:text-base text-gray-300 whitespace-nowrap truncate">{{ $getString('LabelByAuthor', [podcast.artistName]) }}</p>
               <p class="text-xs text-gray-400 leading-5">{{ podcast.genres.join(', ') }}</p>
@@ -108,7 +108,7 @@ export default {
 
       if (!txt || !txt.includes('<opml') || !txt.includes('<outline ')) {
         // Quick lazy check for valid OPML
-        this.$toast.error('Invalid OPML file <opml> tag not found OR an <outline> tag was not found')
+        this.$toast.error(this.$strings.MessageTaskOpmlParseFastFail)
         this.processing = false
         return
       }
@@ -117,7 +117,7 @@ export default {
         .$post(`/api/podcasts/opml/parse`, { opmlText: txt })
         .then((data) => {
           if (!data.feeds?.length) {
-            this.$toast.error('No feeds found in OPML file')
+            this.$toast.error(this.$strings.MessageTaskOpmlParseNoneFound)
           } else {
             this.opmlFeeds = data.feeds || []
             this.showOPMLFeedsModal = true
@@ -125,7 +125,7 @@ export default {
         })
         .catch((error) => {
           console.error('Failed', error)
-          this.$toast.error('Failed to parse OPML file')
+          this.$toast.error(this.$strings.MessageTaskOpmlParseFailed)
         })
         .finally(() => {
           this.processing = false
@@ -191,7 +191,7 @@ export default {
         return
       }
       if (!podcast.feedUrl) {
-        this.$toast.error('Invalid podcast - no feed')
+        this.$toast.error(this.$strings.MessageNoPodcastFeed)
         return
       }
       this.processing = true
@@ -211,15 +211,15 @@ export default {
     async fetchExistentPodcastsInYourLibrary() {
       this.processing = true
 
-      const podcasts = await this.$axios.$get(`/api/libraries/${this.currentLibraryId}/items?page=0&minified=1`).catch((error) => {
+      const podcastsResponse = await this.$axios.$get(`/api/libraries/${this.currentLibraryId}/podcast-titles`).catch((error) => {
         console.error('Failed to fetch podcasts', error)
         return []
       })
-      this.existentPodcasts = podcasts.results.map((p) => {
+      this.existentPodcasts = podcastsResponse.podcasts.map((p) => {
         return {
-          title: p.media.metadata.title.toLowerCase(),
-          itunesId: p.media.metadata.itunesId,
-          id: p.id
+          title: p.title.toLowerCase(),
+          itunesId: p.itunesId,
+          id: p.libraryItemId
         }
       })
       this.processing = false
diff --git a/client/strings/bn.json b/client/strings/bn.json
index a76b4046..b705a802 100644
--- a/client/strings/bn.json
+++ b/client/strings/bn.json
@@ -550,7 +550,7 @@
   "LabelSleepTimer": "স্লিপ টাইমার",
   "LabelSlug": "স্লাগ",
   "LabelStart": "শুরু",
-  "LabelStartTime": "শুরু করার সময়",
+  "LabelStartTime": "শুরুর সময়",
   "LabelStarted": "শুরু হয়েছে",
   "LabelStartedAt": "এতে শুরু হয়েছে",
   "LabelStatsAudioTracks": "অডিও ট্র্যাক",
@@ -901,6 +901,7 @@
   "ToastErrorCannotShare": "এই ডিভাইসে স্থানীয়ভাবে শেয়ার করা যাবে না",
   "ToastFailedToLoadData": "ডেটা লোড করা যায়নি",
   "ToastFailedToShare": "শেয়ার করতে ব্যর্থ",
+  "ToastFailedToUpdate": "আপডেট করতে ব্যর্থ হয়েছে",
   "ToastInvalidImageUrl": "অকার্যকর ছবির ইউআরএল",
   "ToastInvalidUrl": "অকার্যকর ইউআরএল",
   "ToastItemCoverUpdateSuccess": "আইটেম কভার আপডেট করা হয়েছে",
diff --git a/client/strings/de.json b/client/strings/de.json
index 25c34c7e..e8ca3f59 100644
--- a/client/strings/de.json
+++ b/client/strings/de.json
@@ -465,6 +465,8 @@
   "LabelPubDate": "Veröffentlichungsdatum",
   "LabelPublishYear": "Jahr",
   "LabelPublishedDate": "Veröffentlicht {0}",
+  "LabelPublishedDecade": "Jahrzehnt",
+  "LabelPublishedDecades": "Jahrzehnte",
   "LabelPublisher": "Herausgeber",
   "LabelPublishers": "Herausgeber",
   "LabelRSSFeedCustomOwnerEmail": "Benutzerdefinierte Eigentümer-E-Mail",
@@ -567,7 +569,7 @@
   "LabelStatsMinutesListening": "Gehörte Minuten",
   "LabelStatsOverallDays": "Gesamte Tage",
   "LabelStatsOverallHours": "Gesamte Stunden",
-  "LabelStatsWeekListening": "Wochenhördauer",
+  "LabelStatsWeekListening": "7-Tage-Durchschnitt",
   "LabelSubtitle": "Untertitel",
   "LabelSupportedFileTypes": "Unterstützte Dateitypen",
   "LabelTag": "Schlagwort",
@@ -791,17 +793,24 @@
   "MessageTaskFailedToMergeAudioFiles": "Fehler beim zusammenführen der Audiodateien",
   "MessageTaskFailedToMoveM4bFile": "Fehler beim verschieben der m4b Datei",
   "MessageTaskFailedToWriteMetadataFile": "Fehler beim schreiben der Metadaten-Datei",
+  "MessageTaskMatchingBooksInLibrary": "Vergleiche Bücher in Bibliothek \"{0}\"",
   "MessageTaskNoFilesToScan": "Keine Dateien zum scannen",
+  "MessageTaskOpmlImport": "OPML-Import",
   "MessageTaskOpmlImportDescription": "Podcasts von {0} RSS-Feeds werden ersrtellt",
+  "MessageTaskOpmlImportFeed": "OPML-Feed importieren",
   "MessageTaskOpmlImportFeedDescription": "RSS-Feed \"{0}\" wird importiert",
   "MessageTaskOpmlImportFeedFailed": "Podcast Feed konnte nicht geladen werden",
   "MessageTaskOpmlImportFeedPodcastDescription": "Podcast \"{0}\" wird erstellt",
+  "MessageTaskOpmlImportFeedPodcastExists": "Der Podcast ist bereits im Pfad vorhanden",
   "MessageTaskOpmlImportFeedPodcastFailed": "Erstellen des Podcasts fehlgeschlagen",
   "MessageTaskOpmlImportFinished": "{0} Podcasts hinzugefügt",
   "MessageTaskScanItemsAdded": "{0} hinzugefügt",
   "MessageTaskScanItemsMissing": "{0} fehlend",
   "MessageTaskScanItemsUpdated": "{0} aktualisiert",
   "MessageTaskScanNoChangesNeeded": "Keine Änderungen nötig",
+  "MessageTaskScanningFileChanges": "Überprüfe \"{0}\" nach geänderten Dateien",
+  "MessageTaskScanningLibrary": "Bibliothek \"{0}\" wird durchsucht",
+  "MessageTaskTargetDirectoryNotWritable": "Das Zielverzeichnis ist schreibgeschützt",
   "MessageThinking": "Nachdenken...",
   "MessageUploaderItemFailed": "Hochladen fehlgeschlagen",
   "MessageUploaderItemSuccess": "Erfolgreich hochgeladen!",
@@ -894,6 +903,7 @@
   "ToastErrorCannotShare": "Das kann nicht nativ auf diesem Gerät freigegeben werden",
   "ToastFailedToLoadData": "Daten laden fehlgeschlagen",
   "ToastFailedToShare": "Fehler beim Teilen",
+  "ToastFailedToUpdate": "Aktualisierung ist fehlgeschlagen",
   "ToastInvalidImageUrl": "Ungültiger Bild URL",
   "ToastInvalidUrl": "Ungültiger URL",
   "ToastItemCoverUpdateSuccess": "Titelbild aktualisiert",
@@ -912,6 +922,7 @@
   "ToastLibraryScanFailedToStart": "Scan konnte nicht gestartet werden",
   "ToastLibraryScanStarted": "Bibliotheksscan gestartet",
   "ToastLibraryUpdateSuccess": "Bibliothek \"{0}\" aktualisiert",
+  "ToastMatchAllAuthorsFailed": "Nicht alle Autoren konnten zugeordnet werden",
   "ToastNameEmailRequired": "Name und E-Mail sind erforderlich",
   "ToastNameRequired": "Name ist erforderlich",
   "ToastNewUserCreatedFailed": "Fehler beim erstellen des Accounts: \"{ 0}\"",
diff --git a/client/strings/en-us.json b/client/strings/en-us.json
index 34b014dc..adfe1001 100644
--- a/client/strings/en-us.json
+++ b/client/strings/en-us.json
@@ -66,6 +66,7 @@
   "ButtonPurgeItemsCache": "Purge Items Cache",
   "ButtonQueueAddItem": "Add to queue",
   "ButtonQueueRemoveItem": "Remove from queue",
+  "ButtonQuickEmbed": "Quick Embed",
   "ButtonQuickEmbedMetadata": "Quick Embed Metadata",
   "ButtonQuickMatch": "Quick Match",
   "ButtonReScan": "Re-Scan",
@@ -225,6 +226,9 @@
   "LabelAllUsersIncludingGuests": "All users including guests",
   "LabelAlreadyInYourLibrary": "Already in your library",
   "LabelAppend": "Append",
+  "LabelAudioBitrate": "Audio Bitrate (e.g. 128k)",
+  "LabelAudioChannels": "Audio Channels (1 or 2)",
+  "LabelAudioCodec": "Audio Codec",
   "LabelAuthor": "Author",
   "LabelAuthorFirstLast": "Author (First Last)",
   "LabelAuthorLastFirst": "Author (Last, First)",
@@ -237,6 +241,7 @@
   "LabelAutoRegister": "Auto Register",
   "LabelAutoRegisterDescription": "Automatically create new users after logging in",
   "LabelBackToUser": "Back to User",
+  "LabelBackupAudioFiles": "Backup Audio Files",
   "LabelBackupLocation": "Backup Location",
   "LabelBackupsEnableAutomaticBackups": "Enable automatic backups",
   "LabelBackupsEnableAutomaticBackupsHelp": "Backups saved in /metadata/backups",
@@ -303,6 +308,15 @@
   "LabelEmailSettingsTestAddress": "Test Address",
   "LabelEmbeddedCover": "Embedded Cover",
   "LabelEnable": "Enable",
+  "LabelEncodingBackupLocation": "A backup of your original audio files will be stored in:",
+  "LabelEncodingChaptersNotEmbedded": "Chapters are not embedded in multi-track audiobooks.",
+  "LabelEncodingClearItemCache": "Make sure to periodically purge items cache.",
+  "LabelEncodingFinishedM4B": "Finished M4B will be put into your audiobook folder at:",
+  "LabelEncodingInfoEmbedded": "Metadata will be embedded in the audio tracks inside your audiobook folder.",
+  "LabelEncodingStartedNavigation": "Once the task is started you can navigate away from this page.",
+  "LabelEncodingTimeWarning": "Encoding can take up to 30 minutes.",
+  "LabelEncodingWarningAdvancedSettings": "Warning: Do not update these settings unless you are familiar with ffmpeg encoding options.",
+  "LabelEncodingWatcherDisabled": "If you have the watcher disabled you will need to re-scan this audiobook afterwards.",
   "LabelEnd": "End",
   "LabelEndOfChapter": "End of Chapter",
   "LabelEpisode": "Episode",
@@ -501,6 +515,7 @@
   "LabelSeries": "Series",
   "LabelSeriesName": "Series Name",
   "LabelSeriesProgress": "Series Progress",
+  "LabelServerLogLevel": "Server Log Level",
   "LabelServerYearReview": "Server Year in Review ({0})",
   "LabelSetEbookAsPrimary": "Set as primary",
   "LabelSetEbookAsSupplementary": "Set as supplementary",
@@ -596,6 +611,7 @@
   "LabelTitle": "Title",
   "LabelToolsEmbedMetadata": "Embed Metadata",
   "LabelToolsEmbedMetadataDescription": "Embed metadata into audio files including cover image and chapters.",
+  "LabelToolsM4bEncoder": "M4B Encoder",
   "LabelToolsMakeM4b": "Make M4B Audiobook File",
   "LabelToolsMakeM4bDescription": "Generate a .M4B audiobook file with embedded metadata, cover image, and chapters.",
   "LabelToolsSplitM4b": "Split M4B to MP3's",
@@ -621,6 +637,7 @@
   "LabelUploaderDragAndDrop": "Drag & drop files or folders",
   "LabelUploaderDropFiles": "Drop files",
   "LabelUploaderItemFetchMetadataHelp": "Automatically fetch title, author, and series",
+  "LabelUseAdvancedOptions": "Use Advanced Options",
   "LabelUseChapterTrack": "Use chapter track",
   "LabelUseFullTrack": "Use full track",
   "LabelUser": "User",
@@ -669,6 +686,7 @@
   "MessageConfirmDeleteMetadataProvider": "Are you sure you want to delete custom metadata provider \"{0}\"?",
   "MessageConfirmDeleteNotification": "Are you sure you want to delete this notification?",
   "MessageConfirmDeleteSession": "Are you sure you want to delete this session?",
+  "MessageConfirmEmbedMetadataInAudioFiles": "Are you sure you want to embed metadata in {0} audio files?",
   "MessageConfirmForceReScan": "Are you sure you want to force re-scan?",
   "MessageConfirmMarkAllEpisodesFinished": "Are you sure you want to mark all episodes as finished?",
   "MessageConfirmMarkAllEpisodesNotFinished": "Are you sure you want to mark all episodes as not finished?",
@@ -702,6 +720,7 @@
   "MessageDragFilesIntoTrackOrder": "Drag files into correct track order",
   "MessageEmbedFailed": "Embed Failed!",
   "MessageEmbedFinished": "Embed Finished!",
+  "MessageEmbedQueue": "Queued for metadata embed ({0} in queue)",
   "MessageEpisodesQueuedForDownload": "{0} Episode(s) queued for download",
   "MessageEreaderDevices": "To ensure delivery of ebooks, you may need to add the above email address as a valid sender for each device listed below.",
   "MessageFeedURLWillBe": "Feed URL will be {0}",
@@ -746,6 +765,7 @@
   "MessageNoLogs": "No Logs",
   "MessageNoMediaProgress": "No Media Progress",
   "MessageNoNotifications": "No Notifications",
+  "MessageNoPodcastFeed": "Invalid podcast: No Feed",
   "MessageNoPodcastsFound": "No podcasts found",
   "MessageNoResults": "No Results",
   "MessageNoSearchResultsFor": "No search results for \"{0}\"",
@@ -762,6 +782,9 @@
   "MessagePlaylistCreateFromCollection": "Create playlist from collection",
   "MessagePleaseWait": "Please wait...",
   "MessagePodcastHasNoRSSFeedForMatching": "Podcast has no RSS feed url to use for matching",
+  "MessagePodcastSearchField": "Enter search term or RSS feed URL",
+  "MessageQuickEmbedInProgress": "Quick embed in progress",
+  "MessageQuickEmbedQueue": "Queued for quick embed ({0} in queue)",
   "MessageQuickMatchDescription": "Populate empty item details & cover with first match result from '{0}'. Does not overwrite details unless 'Prefer matched metadata' server setting is enabled.",
   "MessageRemoveChapter": "Remove chapter",
   "MessageRemoveEpisodes": "Remove {0} episode(s)",
@@ -804,6 +827,9 @@
   "MessageTaskOpmlImportFeedPodcastExists": "Podcast already exists at path",
   "MessageTaskOpmlImportFeedPodcastFailed": "Failed to create podcast",
   "MessageTaskOpmlImportFinished": "Added {0} podcasts",
+  "MessageTaskOpmlParseFailed": "Failed to parse OPML file",
+  "MessageTaskOpmlParseFastFail": "Invalid OPML file <opml> tag not found OR an <outline> tag was not found",
+  "MessageTaskOpmlParseNoneFound": "No feeds found in OPML file",
   "MessageTaskScanItemsAdded": "{0} added",
   "MessageTaskScanItemsMissing": "{0} missing",
   "MessageTaskScanItemsUpdated": "{0} updated",
@@ -828,6 +854,10 @@
   "NoteUploaderFoldersWithMediaFiles": "Folders with media files will be handled as separate library items.",
   "NoteUploaderOnlyAudioFiles": "If uploading only audio files then each audio file will be handled as a separate audiobook.",
   "NoteUploaderUnsupportedFiles": "Unsupported files are ignored. When choosing or dropping a folder, other files that are not in an item folder are ignored.",
+  "NotificationOnBackupCompletedDescription": "Triggered when a backup is completed",
+  "NotificationOnBackupFailedDescription": "Triggered when a backup fails",
+  "NotificationOnEpisodeDownloadedDescription": "Triggered when a podcast episode is auto-downloaded",
+  "NotificationOnTestDescription": "Event for testing the notification system",
   "PlaceholderNewCollection": "New collection name",
   "PlaceholderNewFolderPath": "New folder path",
   "PlaceholderNewPlaylist": "New playlist name",
diff --git a/client/strings/en_US.json b/client/strings/en_US.json
new file mode 100644
index 00000000..0967ef42
--- /dev/null
+++ b/client/strings/en_US.json
@@ -0,0 +1 @@
+{}
diff --git a/client/strings/es.json b/client/strings/es.json
index 2510d809..cd9621bf 100644
--- a/client/strings/es.json
+++ b/client/strings/es.json
@@ -465,6 +465,8 @@
   "LabelPubDate": "Fecha de publicación",
   "LabelPublishYear": "Año de publicación",
   "LabelPublishedDate": "Publicado {0}",
+  "LabelPublishedDecade": "Una década de publicaciones",
+  "LabelPublishedDecades": "Décadas publicadas",
   "LabelPublisher": "Editor",
   "LabelPublishers": "Editores",
   "LabelRSSFeedCustomOwnerEmail": "Correo electrónico de dueño personalizado",
@@ -920,7 +922,8 @@
   "ToastLibraryScanFailedToStart": "Error al iniciar el escaneo",
   "ToastLibraryScanStarted": "Se inició el escaneo de la biblioteca",
   "ToastLibraryUpdateSuccess": "Biblioteca \"{0}\" actualizada",
-  "ToastNameEmailRequired": "Nombre y correo electrónico obligatorios",
+  "ToastMatchAllAuthorsFailed": "No coincide con todos los autores",
+  "ToastNameEmailRequired": "Son obligatorios el nombre y el correo electrónico",
   "ToastNameRequired": "Nombre obligatorio",
   "ToastNewUserCreatedFailed": "Error al crear la cuenta: \"{0}\"",
   "ToastNewUserCreatedSuccess": "Nueva cuenta creada",
diff --git a/client/strings/fr.json b/client/strings/fr.json
index 3c5e4002..064597b3 100644
--- a/client/strings/fr.json
+++ b/client/strings/fr.json
@@ -465,6 +465,8 @@
   "LabelPubDate": "Date de publication",
   "LabelPublishYear": "Année de publication",
   "LabelPublishedDate": "Publié en {0}",
+  "LabelPublishedDecade": "Décennie de publication",
+  "LabelPublishedDecades": "Décennies de publication",
   "LabelPublisher": "Éditeur",
   "LabelPublishers": "Éditeurs",
   "LabelRSSFeedCustomOwnerEmail": "Courriel personnalisée du propriétaire",
@@ -901,6 +903,7 @@
   "ToastErrorCannotShare": "Impossible de partager nativement sur cet appareil",
   "ToastFailedToLoadData": "Échec du chargement des données",
   "ToastFailedToShare": "Échec du partage",
+  "ToastFailedToUpdate": "Échec de la mise à jour",
   "ToastInvalidImageUrl": "URL de l'image invalide",
   "ToastInvalidUrl": "URL invalide",
   "ToastItemCoverUpdateSuccess": "Couverture mise à jour",
@@ -919,6 +922,7 @@
   "ToastLibraryScanFailedToStart": "Échec du démarrage de l’analyse",
   "ToastLibraryScanStarted": "Analyse de la bibliothèque démarrée",
   "ToastLibraryUpdateSuccess": "Bibliothèque « {0} » mise à jour",
+  "ToastMatchAllAuthorsFailed": "Tous les auteurs et autrices n’ont pas pu être classés",
   "ToastNameEmailRequired": "Le nom et le courriel sont requis",
   "ToastNameRequired": "Le nom est requis",
   "ToastNewUserCreatedFailed": "La création du compte à échouée : « {0} »",
diff --git a/client/strings/hr.json b/client/strings/hr.json
index 9d0ed0d5..1ae07981 100644
--- a/client/strings/hr.json
+++ b/client/strings/hr.json
@@ -463,8 +463,10 @@
   "LabelProvider": "Dobavljač",
   "LabelProviderAuthorizationValue": "Vrijednost autorizacijskog zaglavlja",
   "LabelPubDate": "Datum izdavanja",
-  "LabelPublishYear": "Godina izdavanja",
+  "LabelPublishYear": "Godina objavljivanja",
   "LabelPublishedDate": "Objavljeno {0}",
+  "LabelPublishedDecade": "Desetljeće objavljivanja",
+  "LabelPublishedDecades": "Desetljeća objavljivanja",
   "LabelPublisher": "Izdavač",
   "LabelPublishers": "Izdavači",
   "LabelRSSFeedCustomOwnerEmail": "Prilagođena adresa e-pošte vlasnika",
@@ -920,6 +922,7 @@
   "ToastLibraryScanFailedToStart": "Skeniranje nije uspjelo",
   "ToastLibraryScanStarted": "Skeniranje knjižnice započelo",
   "ToastLibraryUpdateSuccess": "Knjižnica \"{0}\" ažurirana",
+  "ToastMatchAllAuthorsFailed": "Nisu prepoznati svi autori",
   "ToastNameEmailRequired": "Ime i adresa e-pošte su obavezni",
   "ToastNameRequired": "Ime je obavezno",
   "ToastNewUserCreatedFailed": "Račun \"{0}\" nije uspješno izrađen",
diff --git a/client/strings/it.json b/client/strings/it.json
index 3cffc1eb..3078706a 100644
--- a/client/strings/it.json
+++ b/client/strings/it.json
@@ -465,6 +465,8 @@
   "LabelPubDate": "Data di pubblicazione",
   "LabelPublishYear": "Anno di pubblicazione",
   "LabelPublishedDate": "{0} pubblicati",
+  "LabelPublishedDecade": "Decennio di pubblicazione",
+  "LabelPublishedDecades": "Decenni di pubblicazione",
   "LabelPublisher": "Editore",
   "LabelPublishers": "Editori",
   "LabelRSSFeedCustomOwnerEmail": "E-mail del proprietario personalizzato",
@@ -777,6 +779,38 @@
   "MessageShareExpiresIn": "Scade in {0}",
   "MessageShareURLWillBe": "L'indirizzo sarà: <strong>{0}</strong>",
   "MessageStartPlaybackAtTime": "Avvia la riproduzione per \"{0}\" a {1}?",
+  "MessageTaskAudioFileNotWritable": "Il file audio «{0}» non è scrivibile",
+  "MessageTaskCanceledByUser": "Attività annullata dall'utente",
+  "MessageTaskDownloadingEpisodeDescription": "Scaricamento dell'episodio «{0}»",
+  "MessageTaskEmbeddingMetadata": "Metadati integrati",
+  "MessageTaskEmbeddingMetadataDescription": "Integrazione dei metadati nell'audiolibro «{0}»",
+  "MessageTaskEncodingM4b": "Codifica M4B",
+  "MessageTaskEncodingM4bDescription": "Codifica dell'audiolibro «{0}» in un singolo file m4b",
+  "MessageTaskFailed": "Fallimento",
+  "MessageTaskFailedToBackupAudioFile": "Non riuscita a eseguire il backup del file audio «{0}»",
+  "MessageTaskFailedToCreateCacheDirectory": "Non riuscita a creare la cartella della cache",
+  "MessageTaskFailedToEmbedMetadataInFile": "Non ha inserito i metadati nel file «{0}»",
+  "MessageTaskFailedToMergeAudioFiles": "Non è riuscito a fondere i file audio",
+  "MessageTaskFailedToMoveM4bFile": "Non è riuscito a spostare il file m4b",
+  "MessageTaskFailedToWriteMetadataFile": "Non è riuscito a scrivere file di metadati",
+  "MessageTaskMatchingBooksInLibrary": "Libri di corrispondenza in biblioteca «{0}»",
+  "MessageTaskNoFilesToScan": "Nessun file per la scansione",
+  "MessageTaskOpmlImport": "Importazione OPML",
+  "MessageTaskOpmlImportDescription": "Creazione di podcast da {0} flusso RSS",
+  "MessageTaskOpmlImportFeed": "Flusso di importazione OPML",
+  "MessageTaskOpmlImportFeedDescription": "Importazione del flusso RSS «{0}»",
+  "MessageTaskOpmlImportFeedFailed": "Impossibile ottenere il flusso del podcast",
+  "MessageTaskOpmlImportFeedPodcastDescription": "Creazione di podcast «{0}»",
+  "MessageTaskOpmlImportFeedPodcastExists": "Il podcast esiste già nel percorso",
+  "MessageTaskOpmlImportFeedPodcastFailed": "Errore durante la creazione del podcast",
+  "MessageTaskOpmlImportFinished": "{0} podcast aggiunti",
+  "MessageTaskScanItemsAdded": "{0} aggiunti",
+  "MessageTaskScanItemsMissing": "{0} mancanti",
+  "MessageTaskScanItemsUpdated": "{0} aggiornati",
+  "MessageTaskScanNoChangesNeeded": "Nessuna modifica necessaria",
+  "MessageTaskScanningFileChanges": "Cambiamenti di file di scansione in «{0}»",
+  "MessageTaskScanningLibrary": "Scansione della biblioteca «{0}»",
+  "MessageTaskTargetDirectoryNotWritable": "La cartella di destinazione non è scrivibile",
   "MessageThinking": "Elaborazione...",
   "MessageUploaderItemFailed": "Caricamento Fallito",
   "MessageUploaderItemSuccess": "Caricato con successo!",
@@ -869,6 +903,7 @@
   "ToastErrorCannotShare": "Impossibile condividere in modo nativo su questo dispositivo",
   "ToastFailedToLoadData": "Impossibile caricare i dati",
   "ToastFailedToShare": "Impossibile condividere",
+  "ToastFailedToUpdate": "Non aggiornato",
   "ToastInvalidImageUrl": "URL dell'immagine non valido",
   "ToastInvalidUrl": "URL non valido",
   "ToastItemCoverUpdateSuccess": "Cover aggiornata",
@@ -887,6 +922,7 @@
   "ToastLibraryScanFailedToStart": "Errore inizio scansione",
   "ToastLibraryScanStarted": "Scansione Libreria iniziata",
   "ToastLibraryUpdateSuccess": "Libreria \"{0}\" aggiornata",
+  "ToastMatchAllAuthorsFailed": "Tutti gli autori non hanno potuto essere classificati",
   "ToastNameEmailRequired": "Nome ed email sono obbligatori",
   "ToastNameRequired": "Il nome è obbligatorio",
   "ToastNewUserCreatedFailed": "Impossibile creare l'account: \"{0}\"",
diff --git a/client/strings/lt.json b/client/strings/lt.json
index 6cc7966c..9fe65e3a 100644
--- a/client/strings/lt.json
+++ b/client/strings/lt.json
@@ -19,6 +19,7 @@
   "ButtonChooseFiles": "Pasirinkite failus",
   "ButtonClearFilter": "Valyti filtrą",
   "ButtonCloseFeed": "Uždaryti srautą",
+  "ButtonCloseSession": "Uždaryti Atidarytą sesiją",
   "ButtonCollections": "Kolekcijos",
   "ButtonConfigureScanner": "Konfigūruoti skenerį",
   "ButtonCreate": "Kurti",
@@ -28,11 +29,14 @@
   "ButtonEdit": "Redaguoti",
   "ButtonEditChapters": "Redaguoti skyrius",
   "ButtonEditPodcast": "Redaguoti tinklalaidę",
+  "ButtonEnable": "Įjungti",
   "ButtonForceReScan": "Priverstinai nuskaityti iš naujo",
   "ButtonFullPath": "Visas kelias",
   "ButtonHide": "Slėpti",
   "ButtonHome": "Pradžia",
   "ButtonIssues": "Problemos",
+  "ButtonJumpBackward": "Peršokti atgal",
+  "ButtonJumpForward": "Peršokti į priekį",
   "ButtonLatest": "Naujausias",
   "ButtonLibrary": "Biblioteka",
   "ButtonLogout": "Atsijungti",
@@ -42,12 +46,19 @@
   "ButtonMatchAllAuthors": "Pritaikyti visus autorius",
   "ButtonMatchBooks": "Pritaikyti knygas",
   "ButtonNevermind": "Nesvarbu",
+  "ButtonNext": "Kitas",
   "ButtonNextChapter": "Kitas Skyrius",
+  "ButtonNextItemInQueue": "Kitas eilėje",
+  "ButtonOk": "Ok",
   "ButtonOpenFeed": "Atidaryti srautą",
   "ButtonOpenManager": "Atidaryti tvarkyklę",
+  "ButtonPause": "Pauzė",
   "ButtonPlay": "Groti",
+  "ButtonPlayAll": "Groti Visus",
   "ButtonPlaying": "Grojama",
   "ButtonPlaylists": "Grojaraščiai",
+  "ButtonPrevious": "Praeitas",
+  "ButtonPreviousChapter": "Praeitas Skyrius",
   "ButtonPurgeAllCache": "Valyti visą saugyklą",
   "ButtonPurgeItemsCache": "Valyti elementų saugyklą",
   "ButtonQueueAddItem": "Pridėti į eilę",
@@ -55,6 +66,9 @@
   "ButtonQuickMatch": "Greitas pritaikymas",
   "ButtonReScan": "Iš naujo nuskaityti",
   "ButtonRead": "Skaityti",
+  "ButtonReadLess": "Mažiau",
+  "ButtonReadMore": "Daugiau",
+  "ButtonRefresh": "Atnaujinti",
   "ButtonRemove": "Pašalinti",
   "ButtonRemoveAll": "Pašalinti viską",
   "ButtonRemoveAllLibraryItems": "Pašalinti visus bibliotekos elementus",
@@ -72,12 +86,15 @@
   "ButtonSelectFolderPath": "Pasirinkti aplanko kelią",
   "ButtonSeries": "Serijos",
   "ButtonSetChaptersFromTracks": "Nustatyti skyrius iš takelių",
+  "ButtonShare": "Dalintis",
   "ButtonShiftTimes": "Perstumti laikus",
   "ButtonShow": "Rodyti",
   "ButtonStartM4BEncode": "Pradėti M4B kodavimą",
   "ButtonStartMetadataEmbed": "Pradėti metaduomenų įterpimą",
+  "ButtonStats": "Statistika",
   "ButtonSubmit": "Pateikti",
   "ButtonTest": "Testuoti",
+  "ButtonUnlinkOpenId": "Atsieti OpenID",
   "ButtonUpload": "Įkelti",
   "ButtonUploadBackup": "Įkelti atsarginę kopiją",
   "ButtonUploadCover": "Įkelti viršelį",
@@ -86,11 +103,15 @@
   "ButtonUserEdit": "Redaguoti naudotoją {0}",
   "ButtonViewAll": "Peržiūrėti visus",
   "ButtonYes": "Taip",
+  "ErrorUploadFetchMetadataAPI": "Klaida gaunant metaduomenis",
+  "ErrorUploadFetchMetadataNoResults": "Nepavyko gauti metaduomenų - pabandykite atnaujinti pavadinimą ir/ar autorių.",
+  "ErrorUploadLacksTitle": "Pavadinimas yra privalomas",
   "HeaderAccount": "Paskyra",
   "HeaderAdvanced": "Papildomi",
   "HeaderAppriseNotificationSettings": "Apprise pranešimo nustatymai",
   "HeaderAudioTracks": "Garso takeliai",
   "HeaderAudiobookTools": "Audioknygų failų valdymo įrankiai",
+  "HeaderAuthentication": "Autentifikacija",
   "HeaderBackups": "Atsarginės kopijos",
   "HeaderChangePassword": "Pakeisti slaptažodį",
   "HeaderChapters": "Skyriai",
@@ -99,6 +120,7 @@
   "HeaderCollectionItems": "Kolekcijos elementai",
   "HeaderCover": "Viršelis",
   "HeaderCurrentDownloads": "Dabartiniai parsisiuntimai",
+  "HeaderCustomMessageOnLogin": "Pritaikyta prisijungimo žinutė",
   "HeaderDetails": "Detalės",
   "HeaderDownloadQueue": "Parsisiuntimo eilė",
   "HeaderEbookFiles": "Eknygos failai",
@@ -189,7 +211,7 @@
   "LabelBackToUser": "Grįžti į naudotoją",
   "LabelBackupsEnableAutomaticBackups": "Įjungti automatinį atsarginių kopijų kūrimą",
   "LabelBackupsEnableAutomaticBackupsHelp": "Atsarginės kopijos bus išsaugotos /metadata/backups aplanke",
-  "LabelBackupsMaxBackupSize": "Maksimalus atsarginių kopijų dydis (GB)",
+  "LabelBackupsMaxBackupSize": "Maksimalus atsarginių kopijų dydis (GB) (0 - neribotai)",
   "LabelBackupsMaxBackupSizeHelp": "Jei konfigūruotas dydis viršijamas, atsarginės kopijos nebus sukurtos, kad būtų išvengta klaidingų konfigūracijų.",
   "LabelBackupsNumberToKeep": "Laikytinų atsarginių kopijų skaičius",
   "LabelBackupsNumberToKeepHelp": "Tik viena atsarginė kopija bus pašalinta vienu metu, todėl jei jau turite daugiau atsarginių kopijų nei nurodyta, turite jas pašalinti rankiniu būdu.",
@@ -397,7 +419,7 @@
   "LabelSettingsExperimentalFeatures": "Eksperimentiniai funkcionalumai",
   "LabelSettingsExperimentalFeaturesHelp": "Funkcijos, kurios yra kuriamos ir laukiami jūsų komentarai. Spustelėkite, kad atidarytumėte „GitHub“ diskusiją.",
   "LabelSettingsFindCovers": "Rasti viršelius",
-  "LabelSettingsFindCoversHelp": "Jei jūsų audioknyga neturi įterpto viršelio arba viršelio paveikslėlio aplanko, skeneris bandys rasti viršelį.<br>Pastaba: Tai padidins skenavimo trukmę.",
+  "LabelSettingsFindCoversHelp": "Jei jūsų audioknyga neturi įterpto viršelio arba viršelio paveikslėlio aplanke, bandyti rasti viršelį.<br>Pastaba: Tai padidins skenavimo trukmę.",
   "LabelSettingsHideSingleBookSeries": "Slėpti serijas, turinčias tik vieną knygą",
   "LabelSettingsHideSingleBookSeriesHelp": "Serijos, turinčios tik vieną knygą, bus paslėptos nuo serijų puslapio ir pagrindinio puslapio lentynų.",
   "LabelSettingsHomePageBookshelfView": "Naudoti pagrindinio puslapio knygų lentynų vaizdą",
@@ -413,7 +435,7 @@
   "LabelSettingsSquareBookCovers": "Naudoti kvadratinius knygos viršelius",
   "LabelSettingsSquareBookCoversHelp": "Naudoti kvadratinius viršelius vietoj standartinių 1.6:1 knygų viršelių",
   "LabelSettingsStoreCoversWithItem": "Saugoti viršelius su elementu",
-  "LabelSettingsStoreCoversWithItemHelp": "Pagal nutylėjimą viršeliai saugomi /metadata/items aplanke, įjungus šią parinktį viršeliai bus saugomi jūsų bibliotekos elemento aplanke. Bus išsaugotas tik vienas „cover“ pavadinimo failas.",
+  "LabelSettingsStoreCoversWithItemHelp": "Pagal nutylėjimą viršeliai saugomi /metadata/items aplanke, įjungus šią parinktį viršeliai bus saugomi jūsų bibliotekos elemento aplanke. Bus išsaugotas tik vienas failas su \"cover\" pavadinimu.",
   "LabelSettingsStoreMetadataWithItem": "Saugoti metaduomenis su elementu",
   "LabelSettingsStoreMetadataWithItemHelp": "Pagal nutylėjimą metaduomenų failai saugomi /metadata/items aplanke, įjungus šią parinktį metaduomenų failai bus saugomi jūsų bibliotekos elemento aplanke",
   "LabelSettingsTimeFormat": "Laiko formatas",
@@ -642,10 +664,17 @@
   "ToastBookmarkUpdateSuccess": "Žyma atnaujinta",
   "ToastChaptersHaveErrors": "Skyriai turi klaidų",
   "ToastChaptersMustHaveTitles": "Skyriai turi turėti pavadinimus",
+  "ToastChaptersRemoved": "Skyriai pašalinti",
+  "ToastCollectionItemsAddFailed": "Nepavyko pridėti į kolekciją",
+  "ToastCollectionItemsAddSuccess": "Pridėta į kolekciją",
   "ToastCollectionItemsRemoveSuccess": "Elementai pašalinti iš kolekcijos",
   "ToastCollectionRemoveSuccess": "Kolekcija pašalinta",
   "ToastCollectionUpdateSuccess": "Kolekcija atnaujinta",
+  "ToastCoverUpdateFailed": "Viršelio atnaujinimas nepavyko",
+  "ToastDeviceTestEmailSuccess": "Bandomasis el. laiškas išsiųstas",
   "ToastItemCoverUpdateSuccess": "Elemento viršelis atnaujintas",
+  "ToastItemDeletedFailed": "Nepavyko ištrinti",
+  "ToastItemDeletedSuccess": "Ištrinta",
   "ToastItemDetailsUpdateSuccess": "Elemento detalės atnaujintos",
   "ToastItemMarkedAsFinishedFailed": "Pažymėti kaip Baigta nepavyko",
   "ToastItemMarkedAsFinishedSuccess": "Elementas pažymėtas kaip Baigta",
diff --git a/client/strings/nl.json b/client/strings/nl.json
index cd2c872c..06a1ffa8 100644
--- a/client/strings/nl.json
+++ b/client/strings/nl.json
@@ -31,6 +31,7 @@
   "ButtonForceReScan": "Forceer nieuwe scan",
   "ButtonFullPath": "Volledig pad",
   "ButtonHide": "Verberg",
+  "ButtonHome": "Thuis",
   "ButtonIssues": "Problemen",
   "ButtonJumpBackward": "Spring achteruit",
   "ButtonJumpForward": "Spring vooruit",
@@ -76,6 +77,7 @@
   "ButtonScanLibrary": "Scan bibliotheek",
   "ButtonSearch": "Zoeken",
   "ButtonSelectFolderPath": "Maplocatie selecteren",
+  "ButtonSeries": "Series",
   "ButtonSetChaptersFromTracks": "Maak hoofdstukken op basis van tracks",
   "ButtonShare": "Deel",
   "ButtonShiftTimes": "Tijden verschuiven",
@@ -93,6 +95,7 @@
   "ErrorUploadFetchMetadataAPI": "Error metadata ophalen",
   "ErrorUploadFetchMetadataNoResults": "Kan metadata niet ophalen - probeer de titel en/of auteur te updaten",
   "ErrorUploadLacksTitle": "Moet een titel hebben",
+  "HeaderAccount": "Account",
   "HeaderAdvanced": "Geavanceerd",
   "HeaderAppriseNotificationSettings": "Apprise-notificatie instellingen",
   "HeaderAudioTracks": "Audiotracks",
@@ -105,6 +108,7 @@
   "HeaderCollectionItems": "Collectie-objecten",
   "HeaderCover": "Omslag",
   "HeaderCurrentDownloads": "Huidige downloads",
+  "HeaderDetails": "Details",
   "HeaderDownloadQueue": "Download-wachtrij",
   "HeaderEbookFiles": "Ebook bestanden",
   "HeaderEmail": "E-mail",
@@ -207,8 +211,8 @@
   "LabelCollections": "Collecties",
   "LabelComplete": "Compleet",
   "LabelConfirmPassword": "Bevestig wachtwoord",
-  "LabelContinueListening": "Verder luisteren",
-  "LabelContinueReading": "Verder luisteren",
+  "LabelContinueListening": "Verder Luisteren",
+  "LabelContinueReading": "Verder lezen",
   "LabelContinueSeries": "Ga verder met serie",
   "LabelCoverImageURL": "Coverafbeelding URL",
   "LabelCreatedAt": "Gecreëerd op",
diff --git a/client/strings/sl.json b/client/strings/sl.json
index 28655c52..68676313 100644
--- a/client/strings/sl.json
+++ b/client/strings/sl.json
@@ -134,7 +134,7 @@
   "HeaderEmail": "E-pošta",
   "HeaderEmailSettings": "Nastavitve e-pošte",
   "HeaderEpisodes": "Epizode",
-  "HeaderEreaderDevices": "Ebralne naprave",
+  "HeaderEreaderDevices": "E-bralniki",
   "HeaderEreaderSettings": "Nastavitve ebralnika",
   "HeaderFiles": "Datoteke",
   "HeaderFindChapters": "Najdi poglavja",
@@ -146,7 +146,7 @@
   "HeaderLibraries": "Knjižnice",
   "HeaderLibraryFiles": "Datoteke knjižnice",
   "HeaderLibraryStats": "Statistika knjižnice",
-  "HeaderListeningSessions": "Seje poslušanja",
+  "HeaderListeningSessions": "Sej poslušanja",
   "HeaderListeningStats": "Statistika poslušanja",
   "HeaderLogin": "Prijava",
   "HeaderLogs": "Dnevniki",
@@ -161,10 +161,10 @@
   "HeaderNotificationCreate": "Ustvari obvestilo",
   "HeaderNotificationUpdate": "Posodobi obvestilo",
   "HeaderNotifications": "Obvestila",
-  "HeaderOpenIDConnectAuthentication": "Preverjanje pristnosti OpenID Connect",
+  "HeaderOpenIDConnectAuthentication": "Prijava z OpenID Connect",
   "HeaderOpenRSSFeed": "Odpri vir RSS",
   "HeaderOtherFiles": "Ostale datoteke",
-  "HeaderPasswordAuthentication": "Preverjanje pristnosti gesla",
+  "HeaderPasswordAuthentication": "Preverjanje pristnosti z geslom",
   "HeaderPermissions": "Dovoljenja",
   "HeaderPlayerQueue": "Čakalna vrsta predvajalnika",
   "HeaderPlayerSettings": "Nastavitve predvajalnika",
@@ -186,7 +186,7 @@
   "HeaderSettingsDisplay": "Zaslon",
   "HeaderSettingsExperimental": "Eksperimentalne funkcije",
   "HeaderSettingsGeneral": "Splošno",
-  "HeaderSettingsScanner": "Skener",
+  "HeaderSettingsScanner": "Pregledovalnik",
   "HeaderSleepTimer": "Časovnik za izklop",
   "HeaderStatsLargestItems": "Največji elementi",
   "HeaderStatsLongestItems": "Najdaljši elementi (ure)",
@@ -219,7 +219,7 @@
   "LabelAddedAt": "Dodano ob",
   "LabelAddedDate": "Dodano {0}",
   "LabelAdminUsersOnly": "Samo administratorji",
-  "LabelAll": "Vsi",
+  "LabelAll": "Vse",
   "LabelAllUsers": "Vsi uporabniki",
   "LabelAllUsersExcludingGuests": "Vsi uporabniki razen gosti",
   "LabelAllUsersIncludingGuests": "Vsi uporabniki vključno z gosti",
@@ -245,7 +245,7 @@
   "LabelBackupsNumberToKeep": "Število varnostnih kopij, ki jih je treba hraniti",
   "LabelBackupsNumberToKeepHelp": "Naenkrat bo odstranjena samo ena varnostna kopija, če že imate več varnostnih kopij, jih odstranite ročno.",
   "LabelBitrate": "Bitna hitrost",
-  "LabelBooks": "Knjige",
+  "LabelBooks": "knjig",
   "LabelButtonText": "Besedilo gumba",
   "LabelByAuthor": "od {0}",
   "LabelChangePassword": "Spremeni geslo",
@@ -400,8 +400,8 @@
   "LabelMinute": "Minuta",
   "LabelMinutes": "Minute",
   "LabelMissing": "Manjkajoče",
-  "LabelMissingEbook": "Nima nobene eknjige",
-  "LabelMissingSupplementaryEbook": "Nima nobene dodatne eknjige",
+  "LabelMissingEbook": "Nima nobene e-knjige",
+  "LabelMissingSupplementaryEbook": "Nima nobene dodatne e-knjige",
   "LabelMobileRedirectURIs": "Dovoljeni mobilni preusmeritveni URI-ji",
   "LabelMobileRedirectURIsDescription": "To je seznam dovoljenih veljavnih preusmeritvenih URI-jev za mobilne aplikacije. Privzeti je <code>audiobookshelf://oauth</code>, ki ga lahko odstranite ali dopolnite z dodatnimi URI-ji za integracijo aplikacij tretjih oseb. Uporaba zvezdice (<code>*</code>) kot edinega vnosa dovoljuje kateri koli URI.",
   "LabelMore": "Več",
@@ -463,10 +463,12 @@
   "LabelProvider": "Ponudnik",
   "LabelProviderAuthorizationValue": "Vrednost glave avtorizacije",
   "LabelPubDate": "Datum objave",
-  "LabelPublishYear": "Leto objave",
-  "LabelPublishedDate": "Objavljeno {0}",
-  "LabelPublisher": "Založnik",
-  "LabelPublishers": "Založniki",
+  "LabelPublishYear": "Leto izdaje",
+  "LabelPublishedDate": "Izdano {0}",
+  "LabelPublishedDecade": "Desetletje izdaje",
+  "LabelPublishedDecades": "Desetletja izdaje",
+  "LabelPublisher": "Izdajatelj",
+  "LabelPublishers": "Izdajatelji",
   "LabelRSSFeedCustomOwnerEmail": "E-pošta lastnika po meri",
   "LabelRSSFeedCustomOwnerName": "Ime lastnika po meri",
   "LabelRSSFeedOpen": "Odprt vir RSS",
@@ -507,11 +509,11 @@
   "LabelSettingsBookshelfViewHelp": "Skeuomorfna oblika z lesenimi policami",
   "LabelSettingsChromecastSupport": "Podpora za Chromecast",
   "LabelSettingsDateFormat": "Oblika datuma",
-  "LabelSettingsDisableWatcher": "Onemogoči pregledovalca",
-  "LabelSettingsDisableWatcherForLibrary": "Onemogoči pregledovalca map za knjižnico",
+  "LabelSettingsDisableWatcher": "Onemogoči spremljanje datotečnega sistema",
+  "LabelSettingsDisableWatcherForLibrary": "Onemogoči spremljanje map za knjižnico",
   "LabelSettingsDisableWatcherHelp": "Onemogoči samodejno dodajanje/posodabljanje elementov, ko so zaznane spremembe datoteke. *Potreben je ponovni zagon strežnika",
-  "LabelSettingsEnableWatcher": "Omogoči pregledovalca",
-  "LabelSettingsEnableWatcherForLibrary": "Omogoči pregledovalca map za knjižnico",
+  "LabelSettingsEnableWatcher": "Omogoči spremljanje sprememb",
+  "LabelSettingsEnableWatcherForLibrary": "Omogoči spremljanje sprememb v mapi knjižnice",
   "LabelSettingsEnableWatcherHelp": "Omogoča samodejno dodajanje/posodabljanje elementov, ko so zaznane spremembe datoteke. *Potreben je ponovni zagon strežnika",
   "LabelSettingsEpubsAllowScriptedContent": "Dovoli skriptirano vsebino v epubih",
   "LabelSettingsEpubsAllowScriptedContentHelp": "Dovoli datotekam epub izvajanje skript. Priporočljivo je, da to nastavitev pustite onemogočeno, razen če zaupate viru datotek epub.",
@@ -526,12 +528,12 @@
   "LabelSettingsOnlyShowLaterBooksInContinueSeries": "Preskoči prejšnje knjige v nadaljevanju serije",
   "LabelSettingsOnlyShowLaterBooksInContinueSeriesHelp": "Polica z domačo stranjo Nadaljuj serijo prikazuje prvo nezačeto knjigo v seriji, ki ima vsaj eno dokončano knjigo in ni nobene knjige v teku. Če omogočite to nastavitev, se bo serija nadaljevala od najbolj dokončane knjige namesto od prve nezačete knjige.",
   "LabelSettingsParseSubtitles": "Uporabi podnapise",
-  "LabelSettingsParseSubtitlesHelp": "Izvleci podnapise iz imen map zvočnih knjig.<br>Podnaslov mora biti ločen z \" - \"<br>npr. »Naslov knjige – Tu podnapis« ima podnaslov »Tu podnapis«",
+  "LabelSettingsParseSubtitlesHelp": "Izvleci podnapise iz imen map zvočnih knjig.<br>Podnapis mora biti ločen z \" - \"<br>npr. \"Naslov knjige – tu podnapis\" ima podnapis \"tu podnapis\"",
   "LabelSettingsPreferMatchedMetadata": "Prednost imajo ujemajoči se metapodatki",
   "LabelSettingsPreferMatchedMetadataHelp": "Pri uporabi hitrega ujemanja bodo ujemajoči se podatki preglasili podrobnosti artikla. Hitro ujemanje bo privzeto izpolnil samo manjkajoče podrobnosti.",
   "LabelSettingsSkipMatchingBooksWithASIN": "Preskoči ujemajoče se knjige, ki že imajo ASIN",
   "LabelSettingsSkipMatchingBooksWithISBN": "Preskoči ujemajoče se knjige, ki že imajo oznako ISBN",
-  "LabelSettingsSortingIgnorePrefixes": "Pri razvrščanju ne upoštevajte predpon",
+  "LabelSettingsSortingIgnorePrefixes": "Pri razvrščanju ne upoštevaj predpon",
   "LabelSettingsSortingIgnorePrefixesHelp": "npr. za naslov knjige s predpono \"the\" bi se \"The Book Title\" razvrstil kot \"Book Title, The\"",
   "LabelSettingsSquareBookCovers": "Uporabi kvadratne platnice knjig",
   "LabelSettingsSquareBookCoversHelp": "Raje uporabi kvadratne platnice kot standardne knjižne platnice 1.6:1",
@@ -558,15 +560,15 @@
   "LabelStatsBestDay": "Najboljši dan",
   "LabelStatsDailyAverage": "Dnevno povprečje",
   "LabelStatsDays": "Dnevi",
-  "LabelStatsDaysListened": "Poslušani dnevi",
+  "LabelStatsDaysListened": "Dnevi poslušanja",
   "LabelStatsHours": "Ure",
   "LabelStatsInARow": "v vrsti",
   "LabelStatsItemsFinished": "Končani elementi",
   "LabelStatsItemsInLibrary": "Elementi v knjižnici",
   "LabelStatsMinutes": "minute",
-  "LabelStatsMinutesListening": "Poslušane minute",
+  "LabelStatsMinutesListening": "Minut poslušanja",
   "LabelStatsOverallDays": "Skupaj dnevi",
-  "LabelStatsOverallHours": "Skupaj ure",
+  "LabelStatsOverallHours": "Skupaj ur",
   "LabelStatsWeekListening": "Tednov poslušanja",
   "LabelSubtitle": "Podnapis",
   "LabelSupportedFileTypes": "Podprte vrste datotek",
@@ -594,8 +596,8 @@
   "LabelTitle": "Naslov",
   "LabelToolsEmbedMetadata": "Vdelaj metapodatke",
   "LabelToolsEmbedMetadataDescription": "Vdelajte metapodatke v zvočne datoteke, vključno s sliko naslovnice in poglavji.",
-  "LabelToolsMakeM4b": "Ustvari datoteko zvočne knjige M4B",
-  "LabelToolsMakeM4bDescription": "Ustvarite datoteko zvočne knjige .M4B z vdelanimi metapodatki, sliko naslovnice in poglavji.",
+  "LabelToolsMakeM4b": "Ustvari M4B datoteko zvočne knjige",
+  "LabelToolsMakeM4bDescription": "Ustvari zvočno knjigo v .M4B obliki z vdelanimi metapodatki, sliko naslovnice in poglavji.",
   "LabelToolsSplitM4b": "Razdeli M4B v MP3 datoteke",
   "LabelToolsSplitM4bDescription": "Ustvarite MP3 datoteke iz datoteke M4B, razdeljene po poglavjih z vdelanimi metapodatki, naslovno sliko in poglavji.",
   "LabelTotalDuration": "Skupno trajanje",
@@ -610,7 +612,7 @@
   "LabelUnabridged": "Neskrajšano",
   "LabelUndo": "Razveljavi",
   "LabelUnknown": "Neznano",
-  "LabelUnknownPublishDate": "Neznan datum objave",
+  "LabelUnknownPublishDate": "Neznan datum izdaje",
   "LabelUpdateCover": "Posodobi naslovnico",
   "LabelUpdateCoverHelp": "Dovoli prepisovanje obstoječih naslovnic za izbrane knjige, ko se najde ujemanje",
   "LabelUpdateDetails": "Posodobi podrobnosti",
@@ -640,7 +642,7 @@
   "LabelYourPlaylists": "Tvoje seznami predvajanj",
   "LabelYourProgress": "Tvoj napredek",
   "MessageAddToPlayerQueue": "Dodaj v čakalno vrsto predvajalnika",
-  "MessageAppriseDescription": "Če želite uporabljati to funkcijo, morate imeti zagnan primerek <a href=\"https://github.com/caronc/apprise-api\" target=\"_blank\">API Apprise</a> ali API, ki bo obravnaval te iste zahteve. <br />Url API-ja Apprise mora biti celotna pot URL-ja za pošiljanje obvestila, npr. če je vaš primerek API-ja postrežen na <code>http://192.168.1.1:8337</code>, bi morali vnesti <code >http://192.168.1.1:8337/notify</code>.",
+  "MessageAppriseDescription": "Če želite uporabljati to funkcijo, morate imeti zagnano namestitev <a href=\"https://github.com/caronc/apprise-api\" target=\"_blank\">API Apprise</a> ali API, ki bo obravnavala te iste zahteve. <br />Url API-ja Apprise mora biti celotna pot URL-ja za pošiljanje obvestila, npr. če je vaša namestitev API-ja postrežena na <code>http://192.168.1.1:8337</code>, bi morali vnesti <code >http://192.168.1.1:8337/notify</code>.",
   "MessageBackupsDescription": "Varnostne kopije vključujejo uporabnike, napredek uporabnikov, podrobnosti elementov knjižnice, nastavitve strežnika in slike, shranjene v <code>/metadata/items</code> & <code>/metadata/authors</code>. Varnostne kopije <strong>ne</strong> vključujejo datotek, shranjenih v mapah vaše knjižnice.",
   "MessageBackupsLocationEditNote": "Opomba: Posodabljanje lokacije varnostne kopije ne bo premaknilo ali spremenilo obstoječih varnostnih kopij",
   "MessageBackupsLocationNoEditNote": "Opomba: Lokacija varnostne kopije je nastavljena s spremenljivko okolja in je tu ni mogoče spremeniti.",
@@ -651,9 +653,9 @@
   "MessageBookshelfNoResultsForFilter": "Ni rezultatov za filter \"{0}: {1}\"",
   "MessageBookshelfNoResultsForQuery": "Ni rezultatov za poizvedbo",
   "MessageBookshelfNoSeries": "Nimate serij",
-  "MessageChapterEndIsAfter": "Konec poglavja je za koncem vaše zvočne knjige",
+  "MessageChapterEndIsAfter": "Konec poglavja je po koncu zvočne knjige",
   "MessageChapterErrorFirstNotZero": "Prvo poglavje se mora začeti pri 0",
-  "MessageChapterErrorStartGteDuration": "Neveljaven začetni čas mora biti krajši od trajanja zvočne knjige",
+  "MessageChapterErrorStartGteDuration": "Neveljaven začetni čas, mora biti krajši od trajanja zvočne knjige",
   "MessageChapterErrorStartLtPrev": "Neveljaven začetni čas mora biti večji od ali enak začetnemu času prejšnjega poglavja",
   "MessageChapterStartIsAfter": "Začetek poglavja je po koncu vaše zvočne knjige",
   "MessageCheckingCron": "Preverjam cron...",
@@ -667,7 +669,7 @@
   "MessageConfirmDeleteMetadataProvider": "Ali ste prepričani, da želite izbrisati ponudnika metapodatkov po meri \"{0}\"?",
   "MessageConfirmDeleteNotification": "Ali ste prepričani, da želite izbrisati to obvestilo?",
   "MessageConfirmDeleteSession": "Ali ste prepričani, da želite izbrisati to sejo?",
-  "MessageConfirmForceReScan": "Ali ste prepričani, da želite vsiliti ponovno iskanje?",
+  "MessageConfirmForceReScan": "Ali ste prepričani, da želite vsiliti ponovno pregledovanje?",
   "MessageConfirmMarkAllEpisodesFinished": "Ali ste prepričani, da želite označiti vse epizode kot dokončane?",
   "MessageConfirmMarkAllEpisodesNotFinished": "Ali ste prepričani, da želite vse epizode označiti kot nedokončane?",
   "MessageConfirmMarkItemFinished": "Ali ste prepričani, da želite \"{0}\" označiti kot dokončanega?",
@@ -678,7 +680,7 @@
   "MessageConfirmPurgeCache": "Čiščenje predpomnilnika bo izbrisalo celoten imenik v <code>/metadata/cache</code>. <br /><br />Ali ste prepričani, da želite odstraniti imenik predpomnilnika?",
   "MessageConfirmPurgeItemsCache": "Čiščenje predpomnilnika elementov bo izbrisalo celoten imenik na <code>/metadata/cache/items</code>.<br />Ste prepričani?",
   "MessageConfirmQuickEmbed": "Opozorilo! Hitra vdelava ne bo varnostno kopirala vaših zvočnih datotek. Prepričajte se, da imate varnostno kopijo zvočnih datotek. <br><br>Ali želite nadaljevati?",
-  "MessageConfirmReScanLibraryItems": "Ali ste prepričani, da želite ponovno poiskati {0} elementov?",
+  "MessageConfirmReScanLibraryItems": "Ali ste prepričani, da želite ponovno pregledati {0} elementov?",
   "MessageConfirmRemoveAllChapters": "Ali ste prepričani, da želite odstraniti vsa poglavja?",
   "MessageConfirmRemoveAuthor": "Ali ste prepričani, da želite odstraniti avtorja \"{0}\"?",
   "MessageConfirmRemoveCollection": "Ali ste prepričani, da želite odstraniti zbirko \"{0}\"?",
@@ -704,7 +706,7 @@
   "MessageEreaderDevices": "Da zagotovite dostavo e-knjig, boste morda morali dodati zgornji e-poštni naslov kot veljavnega pošiljatelja za vsako spodaj navedeno napravo.",
   "MessageFeedURLWillBe": "URL vira bo {0}",
   "MessageFetching": "Pridobivam...",
-  "MessageForceReScanDescription": "bo znova pregledal vse datoteke kot nov pregled. Oznake ID3 zvočnih datotek, datoteke OPF in besedilne datoteke bodo pregledane kot nove.",
+  "MessageForceReScanDescription": "bo znova pregledal vse datoteke kot pregled od začetka. Oznake ID3 zvočnih datotek, datoteke OPF in besedilne datoteke bodo pregledane kot nove.",
   "MessageImportantNotice": "Pomembno obvestilo!",
   "MessageInsertChapterBelow": "Spodaj vstavite poglavje",
   "MessageItemsSelected": "{0} izbranih elementov",
@@ -716,12 +718,12 @@
   "MessageLogsDescription": "Dnevniki so shranjeni v <code>/metadata/logs</code> kot datoteke JSON. Dnevniki zrušitev so shranjeni v <code>/metadata/logs/crash_logs.txt</code>.",
   "MessageM4BFailed": "M4B ni uspel!",
   "MessageM4BFinished": "M4B končan!",
-  "MessageMapChapterTitles": "Preslikajte naslove poglavij v obstoječa poglavja zvočne knjige brez prilagajanja časovnih žigov",
+  "MessageMapChapterTitles": "Preslikaj naslove poglavij v obstoječa poglavja zvočne knjige brez prilagajanja časovnih indentifikatorjev",
   "MessageMarkAllEpisodesFinished": "Označi vse epizode kot končane",
   "MessageMarkAllEpisodesNotFinished": "Označi vse epizode kot nedokončane",
   "MessageMarkAsFinished": "Označi kot dokončano",
   "MessageMarkAsNotFinished": "Označi kot nedokončano",
-  "MessageMatchBooksDescription": "bo poskušal povezati knjige v knjižnici s knjigo izbranega ponudnika iskanja in izpolniti prazne podatke in naslovnico. Ne prepisujejo se pa podrobnosti.",
+  "MessageMatchBooksDescription": "bo poskušal povezati knjige v knjižnici s knjigo izbranega ponudnika iskanja in izpolniti prazne podatke in naslovnico. Ne prepisuje čez obstoječe podatke.",
   "MessageNoAudioTracks": "Ni zvočnih posnetkov",
   "MessageNoAuthors": "Brez avtorjev",
   "MessageNoBackups": "Brez varnostnih kopij",
@@ -791,7 +793,7 @@
   "MessageTaskFailedToMergeAudioFiles": "Zvočnih datotek ni bilo mogoče združiti",
   "MessageTaskFailedToMoveM4bFile": "Datoteke m4b ni bilo mogoče premakniti",
   "MessageTaskFailedToWriteMetadataFile": "Metapodatke ni bilo mogoče zapisati v datoteke",
-  "MessageTaskMatchingBooksInLibrary": "Ujemam knjige v knjižnici \"{0}\"",
+  "MessageTaskMatchingBooksInLibrary": "Prepoznavam knjige v knjižnici \"{0}\"",
   "MessageTaskNoFilesToScan": "Ni datotek za pregledovanje",
   "MessageTaskOpmlImport": "Uvoz OPML",
   "MessageTaskOpmlImportDescription": "Ustvarjanje podcastov iz {0} virov RSS",
@@ -807,14 +809,14 @@
   "MessageTaskScanItemsUpdated": "{0} posodobljeno",
   "MessageTaskScanNoChangesNeeded": "Spremembe niso potrebne",
   "MessageTaskScanningFileChanges": "Pregledovanje sprememb v datoteki \"{0}\"",
-  "MessageTaskScanningLibrary": "Pregled knjižnice \"{0}\"",
+  "MessageTaskScanningLibrary": "Pregledujem knjižnico \"{0}\"",
   "MessageTaskTargetDirectoryNotWritable": "Ciljni imenik ni zapisljiv",
   "MessageThinking": "Razmišljam...",
   "MessageUploaderItemFailed": "Nalaganje ni uspelo",
   "MessageUploaderItemSuccess": "Uspešno naloženo!",
   "MessageUploading": "Nalaganje...",
   "MessageValidCronExpression": "Veljaven cron izraz",
-  "MessageWatcherIsDisabledGlobally": "Pregledovalec je globalno onemogočen v nastavitvah strežnika",
+  "MessageWatcherIsDisabledGlobally": "Spremljanje sprememb datotek je globalno onemogočeno v nastavitvah strežnika",
   "MessageXLibraryIsEmpty": "{0} Knjižnica je prazna!",
   "MessageYourAudiobookDurationIsLonger": "Trajanje vaše zvočne knjige je daljše od ugotovljenega trajanja",
   "MessageYourAudiobookDurationIsShorter": "Trajanje vaše zvočne knjige je krajše od ugotovljenega trajanja",
@@ -834,11 +836,11 @@
   "StatsAuthorsAdded": "dodanih avtorjev",
   "StatsBooksAdded": "dodanih knjig",
   "StatsBooksAdditional": "Nekateri dodatki vključujejo…",
-  "StatsBooksFinished": "končane knjige",
+  "StatsBooksFinished": "končanih knjig",
   "StatsBooksFinishedThisYear": "Nekaj knjig, ki so bile dokončane letos…",
-  "StatsBooksListenedTo": "poslušane knjige",
+  "StatsBooksListenedTo": "poslušanih knjig",
   "StatsCollectionGrewTo": "Vaša zbirka knjig se je povečala na …",
-  "StatsSessions": "seje",
+  "StatsSessions": "sej",
   "StatsSpentListening": "porabil za poslušanje",
   "StatsTopAuthor": "TOP AVTOR",
   "StatsTopAuthors": "TOP AVTORJI",
@@ -920,6 +922,7 @@
   "ToastLibraryScanFailedToStart": "Pregleda ni bilo mogoče začeti",
   "ToastLibraryScanStarted": "Pregled knjižnice se je začel",
   "ToastLibraryUpdateSuccess": "Knjižnica \"{0}\" je bila posodobljena",
+  "ToastMatchAllAuthorsFailed": "Ujemanje vseh avtorjev ni bilo uspešno",
   "ToastNameEmailRequired": "Ime in e-pošta sta obvezna",
   "ToastNameRequired": "Ime je obvezno",
   "ToastNewUserCreatedFailed": "Računa ni bilo mogoče ustvariti: \"{0}\"",
diff --git a/package-lock.json b/package-lock.json
index 7c1798ed..a428e6f7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "audiobookshelf",
-  "version": "2.14.0",
+  "version": "2.15.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "audiobookshelf",
-      "version": "2.14.0",
+      "version": "2.15.0",
       "license": "GPL-3.0",
       "dependencies": {
         "axios": "^0.27.2",
diff --git a/package.json b/package.json
index 69bc41dd..7e8a4a9a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf",
-  "version": "2.14.0",
+  "version": "2.15.0",
   "buildNumber": 1,
   "description": "Self-hosted audiobook and podcast server",
   "main": "index.js",
diff --git a/server/controllers/LibraryController.js b/server/controllers/LibraryController.js
index a2725543..bf535bba 100644
--- a/server/controllers/LibraryController.js
+++ b/server/controllers/LibraryController.js
@@ -492,8 +492,8 @@ class LibraryController {
     const payload = {
       results: [],
       total: undefined,
-      limit: req.query.limit,
-      page: req.query.page,
+      limit: req.query.limit || 0,
+      page: req.query.page || 0,
       sortBy: req.query.sort,
       sortDesc: req.query.desc === '1',
       filterBy: req.query.filter,
@@ -594,8 +594,8 @@ class LibraryController {
     const payload = {
       results: [],
       total: 0,
-      limit: req.query.limit,
-      page: req.query.page,
+      limit: req.query.limit || 0,
+      page: req.query.page || 0,
       sortBy: req.query.sort,
       sortDesc: req.query.desc === '1',
       filterBy: req.query.filter,
@@ -666,8 +666,8 @@ class LibraryController {
     const payload = {
       results: [],
       total: 0,
-      limit: req.query.limit,
-      page: req.query.page,
+      limit: req.query.limit || 0,
+      page: req.query.page || 0,
       sortBy: req.query.sort,
       sortDesc: req.query.desc === '1',
       filterBy: req.query.filter,
@@ -702,8 +702,8 @@ class LibraryController {
     const payload = {
       results: [],
       total: playlistsForUser.length,
-      limit: req.query.limit,
-      page: req.query.page
+      limit: req.query.limit || 0,
+      page: req.query.page || 0
     }
 
     if (payload.limit) {
@@ -1139,8 +1139,8 @@ class LibraryController {
 
     const payload = {
       episodes: [],
-      limit: req.query.limit,
-      page: req.query.page
+      limit: req.query.limit || 0,
+      page: req.query.page || 0
     }
 
     const offset = payload.page * payload.limit
@@ -1226,6 +1226,44 @@ class LibraryController {
     })
   }
 
+  /**
+   * GET: /api/libraries/:id/podcast-titles
+   *
+   * Get podcast titles with itunesId and libraryItemId for library
+   * Used on the podcast add page in order to check if a podcast is already in the library and redirect to it
+   *
+   * @param {LibraryControllerRequest} req
+   * @param {Response} res
+   */
+  async getPodcastTitles(req, res) {
+    if (!req.user.isAdminOrUp) {
+      Logger.error(`[LibraryController] Non-admin user "${req.user.username}" attempted to get podcast titles`)
+      return res.sendStatus(403)
+    }
+
+    const podcasts = await Database.podcastModel.findAll({
+      attributes: ['id', 'title', 'itunesId'],
+      include: {
+        model: Database.libraryItemModel,
+        attributes: ['id', 'libraryId'],
+        where: {
+          libraryId: req.library.id
+        }
+      }
+    })
+
+    res.json({
+      podcasts: podcasts.map((p) => {
+        return {
+          title: p.title,
+          itunesId: p.itunesId,
+          libraryItemId: p.libraryItem.id,
+          libraryId: p.libraryItem.libraryId
+        }
+      })
+    })
+  }
+
   /**
    *
    * @param {RequestWithUser} req
diff --git a/server/managers/MigrationManager.js b/server/managers/MigrationManager.js
index 706e359c..beaf8a4d 100644
--- a/server/managers/MigrationManager.js
+++ b/server/managers/MigrationManager.js
@@ -38,6 +38,7 @@ class MigrationManager {
     if (!(await fs.pathExists(this.configPath))) throw new Error(`Config path does not exist: ${this.configPath}`)
 
     this.migrationsDir = path.join(this.configPath, 'migrations')
+    await fs.ensureDir(this.migrationsDir)
 
     this.serverVersion = this.extractVersionFromTag(serverVersion)
     if (!this.serverVersion) throw new Error(`Invalid server version: ${serverVersion}. Expected a version tag like v1.2.3.`)
@@ -222,8 +223,6 @@ class MigrationManager {
   }
 
   async copyMigrationsToConfigDir() {
-    await fs.ensureDir(this.migrationsDir) // Ensure the target directory exists
-
     if (!(await fs.pathExists(this.migrationsSourceDir))) return
 
     const files = await fs.readdir(this.migrationsSourceDir)
diff --git a/server/migrations/changelog.md b/server/migrations/changelog.md
index 2e3c295a..b5dde749 100644
--- a/server/migrations/changelog.md
+++ b/server/migrations/changelog.md
@@ -2,6 +2,6 @@
 
 Please add a record of every database migration that you create to this file. This will help us keep track of changes to the database schema over time.
 
-| Server Version | Migration Script Name | Description |
-| -------------- | --------------------- | ----------- |
-|                |                       |             |
+| Server Version | Migration Script Name        | Description                                       |
+| -------------- | ---------------------------- | ------------------------------------------------- |
+| v2.15.0        | v2.15.0-series-column-unique | Series must have unique names in the same library |
diff --git a/server/migrations/v2.15.0-series-column-unique.js b/server/migrations/v2.15.0-series-column-unique.js
new file mode 100644
index 00000000..96b0ea60
--- /dev/null
+++ b/server/migrations/v2.15.0-series-column-unique.js
@@ -0,0 +1,206 @@
+/**
+ * @typedef MigrationContext
+ * @property {import('sequelize').QueryInterface} queryInterface - a suquelize QueryInterface object.
+ * @property {import('../Logger')} logger - a Logger object.
+ *
+ * @typedef MigrationOptions
+ * @property {MigrationContext} context - an object containing the migration context.
+ */
+
+/**
+ * This upward migration script cleans any duplicate series in the `Series` table and
+ * adds a unique index on the `name` and `libraryId` columns.
+ *
+ * @param {MigrationOptions} options - an object containing the migration context.
+ * @returns {Promise<void>} - A promise that resolves when the migration is complete.
+ */
+async function up({ context: { queryInterface, logger } }) {
+  // Upwards migration script
+  logger.info('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique ')
+
+  // Check if the unique index already exists
+  const seriesIndexes = await queryInterface.showIndex('Series')
+  if (seriesIndexes.some((index) => index.name === 'unique_series_name_per_library')) {
+    logger.info('[2.15.0 migration] Unique index on Series.name and Series.libraryId already exists')
+    logger.info('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique ')
+    return
+  }
+
+  // The steps taken to deduplicate the series are as follows:
+  // 1. Find all duplicate series in the `Series` table.
+  // 2. Iterate over the duplicate series and find all book IDs that are associated with the duplicate series in `bookSeries` table.
+  //    2.a For each book ID, check if the ID occurs multiple times for the duplicate series.
+  //    2.b If so, keep only one of the rows that has this bookId and seriesId.
+  // 3. Update `bookSeries` table to point to the most recent series.
+  // 4. Delete the older series.
+
+  // Use the queryInterface to get the series table and find duplicates in the `name` and `libraryId` column
+  const [duplicates] = await queryInterface.sequelize.query(`
+    SELECT name, libraryId
+    FROM Series
+    GROUP BY name, libraryId
+    HAVING COUNT(name) > 1
+  `)
+
+  // Print out how many duplicates were found
+  logger.info(`[2.15.0 migration] Found ${duplicates.length} duplicate series`)
+
+  // Iterate over each duplicate series
+  for (const duplicate of duplicates) {
+    // Report the series name that is being deleted
+    logger.info(`[2.15.0 migration] Deduplicating series "${duplicate.name}" in library ${duplicate.libraryId}`)
+
+    // Determine any duplicate book IDs in the `bookSeries` table for the same series
+    const [duplicateBookIds] = await queryInterface.sequelize.query(
+      `
+        SELECT bookId
+        FROM BookSeries
+        WHERE seriesId IN (
+          SELECT id
+          FROM Series
+          WHERE name = :name AND libraryId = :libraryId
+        )
+        GROUP BY bookId
+        HAVING COUNT(bookId) > 1
+        `,
+      {
+        replacements: {
+          name: duplicate.name,
+          libraryId: duplicate.libraryId
+        }
+      }
+    )
+
+    // Iterate over the duplicate book IDs if there is at least one and only keep the first row that has this bookId and seriesId
+    for (const { bookId } of duplicateBookIds) {
+      logger.info(`[2.15.0 migration] Deduplicating bookId ${bookId} in series "${duplicate.name}" of library ${duplicate.libraryId}`)
+      // Get all rows of `BookSeries` table that have the same `bookId` and `seriesId`. Sort by `sequence` with nulls sorted last
+      const [duplicateBookSeries] = await queryInterface.sequelize.query(
+        `
+            SELECT id
+            FROM BookSeries
+            WHERE bookId = :bookId
+            AND seriesId IN (
+              SELECT id
+              FROM Series
+              WHERE name = :name AND libraryId = :libraryId
+            )
+            ORDER BY sequence NULLS LAST
+            `,
+        {
+          replacements: {
+            bookId,
+            name: duplicate.name,
+            libraryId: duplicate.libraryId
+          }
+        }
+      )
+
+      // remove the first element from the array
+      duplicateBookSeries.shift()
+
+      // Delete the remaining duplicate rows
+      if (duplicateBookSeries.length > 0) {
+        const [deletedBookSeries] = await queryInterface.sequelize.query(
+          `
+              DELETE FROM BookSeries
+              WHERE id IN (:ids)
+              `,
+          {
+            replacements: {
+              ids: duplicateBookSeries.map((row) => row.id)
+            }
+          }
+        )
+      }
+      logger.info(`[2.15.0 migration] Finished cleanup of bookId ${bookId} in series "${duplicate.name}" of library ${duplicate.libraryId}`)
+    }
+
+    // Get all the most recent series which matches the `name` and `libraryId`
+    const [mostRecentSeries] = await queryInterface.sequelize.query(
+      `
+        SELECT id
+        FROM Series
+        WHERE name = :name AND libraryId = :libraryId
+        ORDER BY updatedAt DESC
+        LIMIT 1
+        `,
+      {
+        replacements: {
+          name: duplicate.name,
+          libraryId: duplicate.libraryId
+        },
+        type: queryInterface.sequelize.QueryTypes.SELECT
+      }
+    )
+
+    if (mostRecentSeries) {
+      // Update all BookSeries records for this series to point to the most recent series
+      const [seriesUpdated] = await queryInterface.sequelize.query(
+        `
+          UPDATE BookSeries
+          SET seriesId = :mostRecentSeriesId
+          WHERE seriesId IN (
+            SELECT id
+            FROM Series
+            WHERE name = :name AND libraryId = :libraryId
+            AND id != :mostRecentSeriesId
+          )
+          `,
+        {
+          replacements: {
+            name: duplicate.name,
+            libraryId: duplicate.libraryId,
+            mostRecentSeriesId: mostRecentSeries.id
+          }
+        }
+      )
+
+      // Delete the older series
+      const seriesDeleted = await queryInterface.sequelize.query(
+        `
+          DELETE FROM Series
+          WHERE name = :name AND libraryId = :libraryId
+          AND id != :mostRecentSeriesId
+          `,
+        {
+          replacements: {
+            name: duplicate.name,
+            libraryId: duplicate.libraryId,
+            mostRecentSeriesId: mostRecentSeries.id
+          }
+        }
+      )
+    }
+  }
+
+  logger.info(`[2.15.0 migration] Deduplication complete`)
+
+  // Create a unique index based on the name and library ID for the `Series` table
+  await queryInterface.addIndex('Series', ['name', 'libraryId'], {
+    unique: true,
+    name: 'unique_series_name_per_library'
+  })
+  logger.info('[2.15.0 migration] Added unique index on Series.name and Series.libraryId')
+
+  logger.info('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique ')
+}
+
+/**
+ * This removes the unique index on the `Series` table.
+ *
+ * @param {MigrationOptions} options - an object containing the migration context.
+ * @returns {Promise<void>} - A promise that resolves when the migration is complete.
+ */
+async function down({ context: { queryInterface, logger } }) {
+  // Downward migration script
+  logger.info('[2.15.0 migration] DOWNGRADE BEGIN: 2.15.0-series-column-unique ')
+
+  // Remove the unique index
+  await queryInterface.removeIndex('Series', 'unique_series_name_per_library')
+  logger.info('[2.15.0 migration] Removed unique index on Series.name and Series.libraryId')
+
+  logger.info('[2.15.0 migration] DOWNGRADE END: 2.15.0-series-column-unique ')
+}
+
+module.exports = { up, down }
diff --git a/server/models/Series.js b/server/models/Series.js
index c57a1a11..731908e9 100644
--- a/server/models/Series.js
+++ b/server/models/Series.js
@@ -83,6 +83,12 @@ class Series extends Model {
           //     collate: 'NOCASE'
           //   }]
           // },
+          {
+            // unique constraint on name and libraryId
+            fields: ['name', 'libraryId'],
+            unique: true,
+            name: 'unique_series_name_per_library'
+          },
           {
             fields: ['libraryId']
           }
diff --git a/server/routers/ApiRouter.js b/server/routers/ApiRouter.js
index 1e9d2745..57067ad8 100644
--- a/server/routers/ApiRouter.js
+++ b/server/routers/ApiRouter.js
@@ -96,6 +96,7 @@ class ApiRouter {
     this.router.get('/libraries/:id/opml', LibraryController.middleware.bind(this), LibraryController.getOPMLFile.bind(this))
     this.router.post('/libraries/order', LibraryController.reorder.bind(this))
     this.router.post('/libraries/:id/remove-metadata', LibraryController.middleware.bind(this), LibraryController.removeAllMetadataFiles.bind(this))
+    this.router.get('/libraries/:id/podcast-titles', LibraryController.middleware.bind(this), LibraryController.getPodcastTitles.bind(this))
 
     //
     // Item Routes
diff --git a/server/utils/notifications.js b/server/utils/notifications.js
index 96e8ddf8..7a3e1198 100644
--- a/server/utils/notifications.js
+++ b/server/utils/notifications.js
@@ -7,6 +7,7 @@ module.exports.notificationData = {
       requiresLibrary: true,
       libraryMediaType: 'podcast',
       description: 'Triggered when a podcast episode is auto-downloaded',
+      descriptionKey: 'NotificationOnEpisodeDownloadedDescription',
       variables: ['libraryItemId', 'libraryId', 'podcastTitle', 'podcastAuthor', 'podcastDescription', 'podcastGenres', 'episodeTitle', 'episodeSubtitle', 'episodeDescription', 'libraryName', 'episodeId', 'mediaTags'],
       defaults: {
         title: 'New {{podcastTitle}} Episode!',
@@ -31,6 +32,7 @@ module.exports.notificationData = {
       name: 'onBackupCompleted',
       requiresLibrary: false,
       description: 'Triggered when a backup is completed',
+      descriptionKey: 'NotificationOnBackupCompletedDescription',
       variables: ['completionTime', 'backupPath', 'backupSize', 'backupCount', 'removedOldest'],
       defaults: {
         title: 'Backup Completed',
@@ -48,6 +50,7 @@ module.exports.notificationData = {
       name: 'onBackupFailed',
       requiresLibrary: false,
       description: 'Triggered when a backup fails',
+      descriptionKey: 'NotificationOnBackupFailedDescription',
       variables: ['errorMsg'],
       defaults: {
         title: 'Backup Failed',
@@ -61,6 +64,7 @@ module.exports.notificationData = {
       name: 'onTest',
       requiresLibrary: false,
       description: 'Event for testing the notification system',
+      descriptionKey: 'NotificationOnTestDescription',
       variables: ['version'],
       defaults: {
         title: 'Test Notification on Abs {{version}}',
diff --git a/server/utils/queries/libraryItemsBookFilters.js b/server/utils/queries/libraryItemsBookFilters.js
index 43ffafef..e64e7b78 100644
--- a/server/utils/queries/libraryItemsBookFilters.js
+++ b/server/utils/queries/libraryItemsBookFilters.js
@@ -219,7 +219,7 @@ module.exports = {
         mediaWhere[key] = {
           [Sequelize.Op.or]: [null, '']
         }
-      } else if (['genres', 'tags', 'narrators'].includes(value)) {
+      } else if (['genres', 'tags', 'narrators', 'chapters'].includes(value)) {
         mediaWhere[value] = {
           [Sequelize.Op.or]: [null, Sequelize.where(Sequelize.fn('json_array_length', Sequelize.col(value)), 0)]
         }
diff --git a/test/server/managers/MigrationManager.test.js b/test/server/managers/MigrationManager.test.js
index ae94cd75..af2e9da8 100644
--- a/test/server/managers/MigrationManager.test.js
+++ b/test/server/managers/MigrationManager.test.js
@@ -63,6 +63,8 @@ describe('MigrationManager', () => {
       await migrationManager.init(serverVersion)
 
       // Assert
+      expect(fsEnsureDirStub.calledOnce).to.be.true
+      expect(fsEnsureDirStub.calledWith(migrationManager.migrationsDir)).to.be.true
       expect(migrationManager.serverVersion).to.equal(serverVersion)
       expect(migrationManager.sequelize).to.equal(sequelizeStub)
       expect(migrationManager.migrationsDir).to.equal(path.join(__dirname, 'migrations'))
@@ -353,8 +355,6 @@ describe('MigrationManager', () => {
       await migrationManager.copyMigrationsToConfigDir()
 
       // Assert
-      expect(fsEnsureDirStub.calledOnce).to.be.true
-      expect(fsEnsureDirStub.calledWith(targetDir)).to.be.true
       expect(readdirStub.calledOnce).to.be.true
       expect(readdirStub.calledWith(migrationsSourceDir)).to.be.true
       expect(fsCopyStub.calledTwice).to.be.true
@@ -382,8 +382,6 @@ describe('MigrationManager', () => {
       } catch (error) {}
 
       // Assert
-      expect(fsEnsureDirStub.calledOnce).to.be.true
-      expect(fsEnsureDirStub.calledWith(targetDir)).to.be.true
       expect(readdirStub.calledOnce).to.be.true
       expect(readdirStub.calledWith(migrationsSourceDir)).to.be.true
       expect(fsCopyStub.calledTwice).to.be.true
diff --git a/test/server/migrations/v2.15.0-series-column-unique.test.js b/test/server/migrations/v2.15.0-series-column-unique.test.js
new file mode 100644
index 00000000..4ae07e63
--- /dev/null
+++ b/test/server/migrations/v2.15.0-series-column-unique.test.js
@@ -0,0 +1,335 @@
+const { expect } = require('chai')
+const sinon = require('sinon')
+const { up, down } = require('../../../server/migrations/v2.15.0-series-column-unique')
+const { Sequelize } = require('sequelize')
+const Logger = require('../../../server/Logger')
+const { query } = require('express')
+const { logger } = require('sequelize/lib/utils/logger')
+const e = require('express')
+
+describe('migration-v2.15.0-series-column-unique', () => {
+  let sequelize
+  let queryInterface
+  let loggerInfoStub
+  let series1Id
+  let series2Id
+  let series3Id
+  let series1Id_dup
+  let series3Id_dup
+  let series1Id_dup2
+  let book1Id
+  let book2Id
+  let book3Id
+  let book4Id
+  let book5Id
+  let book6Id
+  let library1Id
+  let library2Id
+  let bookSeries1Id
+  let bookSeries2Id
+  let bookSeries3Id
+  let bookSeries1Id_dup
+  let bookSeries3Id_dup
+  let bookSeries1Id_dup2
+
+  beforeEach(() => {
+    sequelize = new Sequelize({ dialect: 'sqlite', storage: ':memory:', logging: false })
+    queryInterface = sequelize.getQueryInterface()
+    loggerInfoStub = sinon.stub(Logger, 'info')
+  })
+
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  describe('up', () => {
+    beforeEach(async () => {
+      await queryInterface.createTable('Series', {
+        id: { type: Sequelize.UUID, primaryKey: true },
+        name: { type: Sequelize.STRING, allowNull: false },
+        libraryId: { type: Sequelize.UUID, allowNull: false },
+        createdAt: { type: Sequelize.DATE, allowNull: false },
+        updatedAt: { type: Sequelize.DATE, allowNull: false }
+      })
+      // Create a table for BookSeries, with a unique constraint of bookId and seriesId
+      await queryInterface.createTable(
+        'BookSeries',
+        {
+          id: { type: Sequelize.UUID, primaryKey: true },
+          sequence: { type: Sequelize.STRING, allowNull: true },
+          bookId: { type: Sequelize.UUID, allowNull: false },
+          seriesId: { type: Sequelize.UUID, allowNull: false }
+        },
+        { uniqueKeys: { book_series_unique: { fields: ['bookId', 'seriesId'] } } }
+      )
+      // Set UUIDs for the tests
+      series1Id = 'fc086255-3fd2-4a95-8a28-840d9206501b'
+      series2Id = '70f46ac2-ee48-4b3c-9822-933cc15c29bd'
+      series3Id = '01cac008-142b-4e15-b0ff-cf7cc2c5b64e'
+      series1Id_dup = 'ad0b3b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      series3Id_dup = '4b3b4b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      series1Id_dup2 = '0123456a-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      book1Id = '4a38b6e5-0ae4-4de4-b119-4e33891bd63f'
+      book2Id = '8bc2e61d-47f6-42ef-a3f4-93cf2f1de82f'
+      book3Id = 'ec9bbaaf-1e55-457f-b59c-bd2bd955a404'
+      book4Id = '876f3b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      book5Id = '4e5b4b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      book6Id = 'abcda123-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      library1Id = '3a5a1c7c-a914-472e-88b0-b871ceae63e7'
+      library2Id = 'fd6c324a-4f3a-4bb0-99d6-7a330e765e7e'
+      bookSeries1Id = 'eca24687-2241-4ffa-a9b3-02a0ba03c763'
+      bookSeries2Id = '56f56105-813b-4395-9689-fd04198e7d5d'
+      bookSeries3Id = '404a1761-c710-4d86-9d78-68d9a9c0fb6b'
+      bookSeries1Id_dup = '8bea3b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      bookSeries3Id_dup = '89656a3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+      bookSeries1Id_dup2 = '9bea3b3b-4b3b-4b3b-4b3b-4b3b4b3b4b3b'
+    })
+    afterEach(async () => {
+      await queryInterface.dropTable('Series')
+      await queryInterface.dropTable('BookSeries')
+    })
+    it('upgrade with no duplicate series', async () => {
+      // Add some entries to the Series table using the UUID for the ids
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 2', libraryId: library2Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series3Id, name: 'Series 3', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Add some entries to the BookSeries table
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, sequence: '1', bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, bookId: book2Id, seriesId: series2Id },
+        { id: bookSeries3Id, sequence: '1', bookId: book3Id, seriesId: series3Id }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(5)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 0 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // Validate rows in tables
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(3)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      expect(series).to.deep.include({ id: series2Id, name: 'Series 2', libraryId: library2Id })
+      expect(series).to.deep.include({ id: series3Id, name: 'Series 3', libraryId: library1Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "sequence", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(3)
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id, sequence: '1', bookId: book1Id, seriesId: series1Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries2Id, sequence: null, bookId: book2Id, seriesId: series2Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries3Id, sequence: '1', bookId: book3Id, seriesId: series3Id })
+    })
+    it('upgrade with duplicate series and no sequence', async () => {
+      // Add some entries to the Series table using the UUID for the ids
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 2', libraryId: library2Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series3Id, name: 'Series 3', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series1Id_dup, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series3Id_dup, name: 'Series 3', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series1Id_dup2, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Add some entries to the BookSeries table
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, bookId: book2Id, seriesId: series2Id },
+        { id: bookSeries3Id, bookId: book3Id, seriesId: series3Id },
+        { id: bookSeries1Id_dup, bookId: book4Id, seriesId: series1Id_dup },
+        { id: bookSeries3Id_dup, bookId: book5Id, seriesId: series3Id_dup },
+        { id: bookSeries1Id_dup2, bookId: book6Id, seriesId: series1Id_dup2 }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(7)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 2 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplicating series "Series 1" in library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Deduplicating series "Series 3" in library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(5).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(6).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // Validate rows
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(3)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      expect(series).to.deep.include({ id: series2Id, name: 'Series 2', libraryId: library2Id })
+      expect(series).to.deep.include({ id: series3Id, name: 'Series 3', libraryId: library1Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(6)
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id, bookId: book1Id, seriesId: series1Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries2Id, bookId: book2Id, seriesId: series2Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries3Id, bookId: book3Id, seriesId: series3Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id_dup, bookId: book4Id, seriesId: series1Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries3Id_dup, bookId: book5Id, seriesId: series3Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id_dup2, bookId: book6Id, seriesId: series1Id })
+    })
+    it('upgrade with same series name in different libraries', async () => {
+      // Add some entries to the Series table using the UUID for the ids
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 1', libraryId: library2Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Add some entries to the BookSeries table
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, bookId: book2Id, seriesId: series2Id }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(5)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 0 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // Validate rows
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(2)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      expect(series).to.deep.include({ id: series2Id, name: 'Series 1', libraryId: library2Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(2)
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id, bookId: book1Id, seriesId: series1Id })
+      expect(bookSeries).to.deep.include({ id: bookSeries2Id, bookId: book2Id, seriesId: series2Id })
+    })
+    it('upgrade with one book in two of the same series, both sequence are null', async () => {
+      // Create two different series with the same name in the same library
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Create a book that is in both series
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, bookId: book1Id, seriesId: series2Id }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(8)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 1 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplicating series "Series 1" in library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Deduplicating bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] Finished cleanup of bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(5).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(6).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(7).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // validate rows
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(1)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "sequence", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(1)
+      // Keep BookSeries 2 because it was edited last from cleaning up duplicate books
+      expect(bookSeries).to.deep.include({ id: bookSeries2Id, sequence: null, bookId: book1Id, seriesId: series1Id })
+    })
+    it('upgrade with one book in two of the same series, one sequence is null', async () => {
+      // Create two different series with the same name in the same library
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Create a book that is in both series
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, sequence: '1', bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, bookId: book1Id, seriesId: series2Id }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(8)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 1 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplicating series "Series 1" in library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Deduplicating bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] Finished cleanup of bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(5).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(6).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(7).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // validate rows
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(1)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "sequence", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(1)
+      expect(bookSeries).to.deep.include({ id: bookSeries1Id, sequence: '1', bookId: book1Id, seriesId: series1Id })
+    })
+    it('upgrade with one book in two of the same series, both sequence are not null', async () => {
+      // Create two different series with the same name in the same library
+      await queryInterface.bulkInsert('Series', [
+        { id: series1Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() },
+        { id: series2Id, name: 'Series 1', libraryId: library1Id, createdAt: new Date(), updatedAt: new Date() }
+      ])
+      // Create a book that is in both series
+      await queryInterface.bulkInsert('BookSeries', [
+        { id: bookSeries1Id, sequence: '3', bookId: book1Id, seriesId: series1Id },
+        { id: bookSeries2Id, sequence: '2', bookId: book1Id, seriesId: series2Id }
+      ])
+
+      await up({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(8)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 1 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplicating series "Series 1" in library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Deduplicating bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] Finished cleanup of bookId 4a38b6e5-0ae4-4de4-b119-4e33891bd63f in series "Series 1" of library 3a5a1c7c-a914-472e-88b0-b871ceae63e7'))).to.be.true
+      expect(loggerInfoStub.getCall(5).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(6).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(7).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // validate rows
+      const series = await queryInterface.sequelize.query('SELECT "id", "name", "libraryId" FROM Series', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(series).to.have.length(1)
+      expect(series).to.deep.include({ id: series1Id, name: 'Series 1', libraryId: library1Id })
+      const bookSeries = await queryInterface.sequelize.query('SELECT "id", "sequence", "bookId", "seriesId" FROM BookSeries', { type: queryInterface.sequelize.QueryTypes.SELECT })
+      expect(bookSeries).to.have.length(1)
+      // Keep BookSeries 2 because it is the lower sequence number
+      expect(bookSeries).to.deep.include({ id: bookSeries2Id, sequence: '2', bookId: book1Id, seriesId: series1Id })
+    })
+  })
+
+  describe('down', () => {
+    beforeEach(async () => {
+      await queryInterface.createTable('Series', {
+        id: { type: Sequelize.UUID, primaryKey: true },
+        name: { type: Sequelize.STRING, allowNull: false },
+        libraryId: { type: Sequelize.UUID, allowNull: false },
+        createdAt: { type: Sequelize.DATE, allowNull: false },
+        updatedAt: { type: Sequelize.DATE, allowNull: false }
+      })
+      // Create a table for BookSeries, with a unique constraint of bookId and seriesId
+      await queryInterface.createTable(
+        'BookSeries',
+        {
+          id: { type: Sequelize.UUID, primaryKey: true },
+          bookId: { type: Sequelize.UUID, allowNull: false },
+          seriesId: { type: Sequelize.UUID, allowNull: false }
+        },
+        { uniqueKeys: { book_series_unique: { fields: ['bookId', 'seriesId'] } } }
+      )
+    })
+    it('should not have unique constraint on series name and libraryId', async () => {
+      await up({ context: { queryInterface, logger: Logger } })
+      await down({ context: { queryInterface, logger: Logger } })
+
+      expect(loggerInfoStub.callCount).to.equal(8)
+      expect(loggerInfoStub.getCall(0).calledWith(sinon.match('[2.15.0 migration] UPGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(1).calledWith(sinon.match('[2.15.0 migration] Found 0 duplicate series'))).to.be.true
+      expect(loggerInfoStub.getCall(2).calledWith(sinon.match('[2.15.0 migration] Deduplication complete'))).to.be.true
+      expect(loggerInfoStub.getCall(3).calledWith(sinon.match('[2.15.0 migration] Added unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(4).calledWith(sinon.match('[2.15.0 migration] UPGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(5).calledWith(sinon.match('[2.15.0 migration] DOWNGRADE BEGIN: 2.15.0-series-column-unique '))).to.be.true
+      expect(loggerInfoStub.getCall(6).calledWith(sinon.match('[2.15.0 migration] Removed unique index on Series.name and Series.libraryId'))).to.be.true
+      expect(loggerInfoStub.getCall(7).calledWith(sinon.match('[2.15.0 migration] DOWNGRADE END: 2.15.0-series-column-unique '))).to.be.true
+      // Ensure index does not exist
+      const indexes = await queryInterface.showIndex('Series')
+      expect(indexes).to.not.deep.include({ tableName: 'Series', unique: true, fields: ['name', 'libraryId'], name: 'unique_series_name_per_library' })
+    })
+  })
+})