diff --git a/client/package-lock.json b/client/package-lock.json
index 71bcf26a..57d2da71 100644
--- a/client/package-lock.json
+++ b/client/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "audiobookshelf-client",
-  "version": "2.33.1",
+  "version": "2.33.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "audiobookshelf-client",
-      "version": "2.33.1",
+      "version": "2.33.2",
       "license": "ISC",
       "dependencies": {
         "@nuxtjs/axios": "^5.13.6",
diff --git a/client/package.json b/client/package.json
index 782f411b..f747cf90 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf-client",
-  "version": "2.33.1",
+  "version": "2.33.2",
   "buildNumber": 1,
   "description": "Self-hosted audiobook and podcast client",
   "main": "index.js",
diff --git a/client/players/LocalAudioPlayer.js b/client/players/LocalAudioPlayer.js
index 7fc17e7a..a0384d54 100644
--- a/client/players/LocalAudioPlayer.js
+++ b/client/players/LocalAudioPlayer.js
@@ -46,7 +46,20 @@ export default class LocalAudioPlayer extends EventEmitter {
     this.player.addEventListener('loadedmetadata', this.evtLoadedMetadata.bind(this))
     this.player.addEventListener('timeupdate', this.evtTimeupdate.bind(this))
 
-    var mimeTypes = ['audio/flac', 'audio/mpeg', 'audio/mp4', 'audio/ogg', 'audio/aac', 'audio/x-ms-wma', 'audio/x-aiff', 'audio/webm']
+    var mimeTypes = [
+      'audio/flac',
+      'audio/mpeg',
+      'audio/mp4',
+      'audio/ogg',
+      'audio/aac',
+      'audio/x-ms-wma',
+      'audio/x-aiff',
+      'audio/webm',
+      // `audio/matroska` is the correct mimetype, but the server still uses `audio/x-matroska`
+      // ref: https://www.iana.org/assignments/media-types/media-types.xhtml
+      'audio/matroska',
+      'audio/x-matroska'
+    ]
     var mimeTypeCanPlayMap = {}
     mimeTypes.forEach((mt) => {
       var canPlay = this.player.canPlayType(mt)
diff --git a/client/strings/be.json b/client/strings/be.json
index d598ef7b..43668acb 100644
--- a/client/strings/be.json
+++ b/client/strings/be.json
@@ -16,7 +16,7 @@
   "ButtonBrowseForFolder": "Агляд папак",
   "ButtonCancel": "Скасаваць",
   "ButtonCancelEncode": "Скасаваць кадзіраванне",
-  "ButtonChangeRootPassword": "Зменіце Root пароль",
+  "ButtonChangeRootPassword": "Змяніць пароль root",
   "ButtonCheckAndDownloadNewEpisodes": "Праверыць і спампаваць новыя выпускі",
   "ButtonChooseAFolder": "Выбраць папку",
   "ButtonChooseFiles": "Выбраць файлы",
@@ -81,7 +81,7 @@
   "ButtonRemove": "Выдаліць",
   "ButtonRemoveAll": "Выдаліць усе",
   "ButtonRemoveAllLibraryItems": "Выдаліць усе элементы бібліятэкі",
-  "ButtonRemoveFromContinueListening": "Выдаліць з Працягнуць праслухоўванне",
+  "ButtonRemoveFromContinueListening": "Выдаліць з Працяг праслухоўвання",
   "ButtonRemoveFromContinueReading": "Выдаліць з Працягваць чытанне",
   "ButtonRemoveSeriesFromContinueSeries": "Выдаліць серыю з Працягваць серыю",
   "ButtonReset": "Скінуць",
@@ -252,8 +252,8 @@
   "LabelAudioChannels": "Аўдыяканалы (1 або 2)",
   "LabelAudioCodec": "Аўдыякодэк",
   "LabelAuthor": "Аўтар",
-  "LabelAuthorFirstLast": "Аўтар (Імя Прозвішча)",
-  "LabelAuthorLastFirst": "Аўтар (Прозвішча, Імя)",
+  "LabelAuthorFirstLast": "Аўтар (імя, прозвішча)",
+  "LabelAuthorLastFirst": "Аўтар (прозвішча, імя)",
   "LabelAuthors": "Аўтары",
   "LabelAutoDownloadEpisodes": "Аўтаматычна спампоўваць выпускі",
   "LabelAutoFetchMetadata": "Аўтаматычнае атрыманне метаданых",
@@ -292,7 +292,7 @@
   "LabelCollections": "Калекцыі",
   "LabelComplete": "Завяршыць",
   "LabelConfirmPassword": "Пацвердзіце пароль",
-  "LabelContinueListening": "Працягнуць праслухоўванне",
+  "LabelContinueListening": "Працяг праслухоўвання",
   "LabelContinueReading": "Працягнуць чытанне",
   "LabelContinueSeries": "Працягнуць серыі",
   "LabelCorsAllowed": "Дазволеныя крыніцы CORS",
@@ -424,7 +424,7 @@
   "LabelLastBookAdded": "Апошняя дададзеная кніга",
   "LabelLastBookUpdated": "Апошняя абноўленая кніга",
   "LabelLastProgressDate": "Апошні прагрэс: {0}",
-  "LabelLastSeen": "Апошні прагляд",
+  "LabelLastSeen": "Апошняя актыўнасць",
   "LabelLastTime": "Апошні раз",
   "LabelLastUpdate": "Апошняе абнаўленне",
   "LabelLayout": "Знешні выгляд",
@@ -545,7 +545,7 @@
   "LabelRSSFeedSlug": "Ідэнтыфікатар RSS-стужкі",
   "LabelRSSFeedURL": "URL RSS-стужкі",
   "LabelRandomly": "Выпадкова",
-  "LabelReAddSeriesToContinueListening": "Дадаць серыю зноў у Працягнуць праслухоўванне",
+  "LabelReAddSeriesToContinueListening": "Дадаць серыю зноў у Працяг праслухоўвання",
   "LabelRead": "Чытаць",
   "LabelReadAgain": "Чытаць зноў",
   "LabelReadEbookWithoutProgress": "Чытаць электронную кнігу без захавання прагрэсу",
@@ -634,12 +634,12 @@
   "LabelSortAscending": "Па ўзрастанні",
   "LabelSortDescending": "Па ўбыванні",
   "LabelSortPubDate": "Сартаваць па даце публікацыі",
-  "LabelStart": "Пачаць",
+  "LabelStart": "Пачатак",
   "LabelStartTime": "Час пачатку",
   "LabelStarted": "Пачата",
   "LabelStartedAt": "Пачата ў",
   "LabelStartedDate": "Пачата {0}",
-  "LabelStatsAudioTracks": "Аўдыятрэкаў",
+  "LabelStatsAudioTracks": "Аўдыятрэкі",
   "LabelStatsAuthors": "Аўтараў",
   "LabelStatsBestDay": "Найлепшы дзень",
   "LabelStatsDailyAverage": "У сярэднім за дзень",
diff --git a/client/strings/bg.json b/client/strings/bg.json
index dacd6208..460f0ff8 100644
--- a/client/strings/bg.json
+++ b/client/strings/bg.json
@@ -436,7 +436,7 @@
   "LabelLibraryFilterSublistEmpty": "Не {0}",
   "LabelLibraryItem": "Елемент на Библиотека",
   "LabelLibraryName": "Име на Библиотека",
-  "LabelLibrarySortByProgress": "Прогрес: Последно Обновен",
+  "LabelLibrarySortByProgress": "Прогрес: Последно обновление",
   "LabelLibrarySortByProgressFinished": "Прогрес: Приключено",
   "LabelLibrarySortByProgressStarted": "Прогрес: Започнато",
   "LabelLimit": "Лимит",
@@ -892,7 +892,7 @@
   "MessageScheduleRunEveryWeekdayAtTime": "Изпълни всеки {0} в {1}",
   "MessageSearchResultsFor": "Резултати от търсенето за",
   "MessageSelected": "{0} избрани",
-  "MessageSeriesSequenceCannotContainSpaces": "Подредбата в серия не може да съдържа шпации.",
+  "MessageSeriesSequenceCannotContainSpaces": "Подредбата в серия не може да съдържа шпации",
   "MessageServerCouldNotBeReached": "Сървърът не може да бъде достигнат",
   "MessageSetChaptersFromTracksDescription": "Задайте глави, като използвате всеки аудио файл като глава и заглавие на главата като име на аудио файла",
   "MessageShareExpirationWillBe": "Изтичането ще бъде на <strong>{0}</strong>",
@@ -956,6 +956,8 @@
   "NotificationOnEpisodeDownloadedDescription": "Изпълнява се при автоматично изтегляне на подкаст епизод",
   "NotificationOnRSSFeedDisabledDescription": "Изпълнява се, когато автоматичното изтегляне на епизодите е деактивирано, поради твърде много неуспешни опити",
   "NotificationOnRSSFeedFailedDescription": "Пуска се когато заявката за RSS фийд е неуспешна за автоматично сваляне на епизод",
+  "NotificationOnTestDescription": "Event за тестване на системата за нотификации",
+  "PlaceholderBulkChapterInput": "Въведете име на глава или използвайте номериране (прим. 'Епизод 1', 'Глава 10', '1.')",
   "PlaceholderNewCollection": "Ново име на колекцията",
   "PlaceholderNewFolderPath": "Нов път на папката",
   "PlaceholderNewPlaylist": "Ново име на плейлиста",
@@ -963,26 +965,58 @@
   "PlaceholderSearchEpisode": "Търсене на Епизоди...",
   "StatsAuthorsAdded": "добаврени автори",
   "StatsBooksAdded": "добавени книги",
+  "StatsBooksAdditional": "Някой от вкючените добавки…",
   "StatsBooksFinished": "завършени книги",
+  "StatsBooksFinishedThisYear": "Някой от книгите приключени тази година…",
+  "StatsBooksListenedTo": "слушани книги",
+  "StatsCollectionGrewTo": "Твоята книжна колекция израсна до…",
+  "StatsSessions": "сесии",
+  "StatsSpentListening": "прекарано в слушане",
+  "StatsTopAuthor": "ТОП АВТОР",
+  "StatsTopAuthors": "ТОП АВТОРИ",
+  "StatsTopGenre": "ТОП ЖАНР",
+  "StatsTopGenres": "ТОП ЖАНРА",
+  "StatsTopMonth": "ТОП МЕСЕЦ",
+  "StatsTopNarrator": "ТОП РАЗКАЗВАЧ",
+  "StatsTopNarrators": "ТОП РАЗКАЗВАЧИ",
+  "StatsTotalDuration": "С пълно времетраене…",
+  "StatsYearInReview": "ГОДИНАТА В ПРЕГЛЕД",
   "ToastAccountUpdateSuccess": "Успешно обновяване на акаунта",
+  "ToastAppriseUrlRequired": "Трябва да въведете Apprise URL",
+  "ToastAsinRequired": "ASIN-а е задължителен",
   "ToastAuthorImageRemoveSuccess": "Авторската снимка е премахната",
+  "ToastAuthorNotFound": "Автор \"{0}\" не е намерен",
+  "ToastAuthorRemoveSuccess": "Арторът е премахнат",
+  "ToastAuthorSearchNotFound": "Авторът не е намерен",
   "ToastAuthorUpdateMerged": "Обновяване на автора сливано",
   "ToastAuthorUpdateSuccess": "Автора обновен",
   "ToastAuthorUpdateSuccessNoImageFound": "Автор обновен (не е намерена снимка)",
+  "ToastBackupAppliedSuccess": "Архивът е приложен",
   "ToastBackupCreateFailed": "Неуспешно създаване на архив",
   "ToastBackupCreateSuccess": "Архивът е създаден",
   "ToastBackupDeleteFailed": "Неуспешно изтриване на архив",
   "ToastBackupDeleteSuccess": "Архивът е изтрит",
+  "ToastBackupInvalidMaxKeep": "Невалиден брой за архиви за запазване",
+  "ToastBackupInvalidMaxSize": "Невалиден максимален рамер на архив",
   "ToastBackupRestoreFailed": "Неуспешно възстановяване на архив",
   "ToastBackupUploadFailed": "Неуспешно качване на архив",
   "ToastBackupUploadSuccess": "Архивът е качен",
+  "ToastBatchApplyDetailsToItemsSuccess": "Детайли приложени на предмети",
+  "ToastBatchDeleteFailed": "Груповото изтриване се провали",
+  "ToastBatchDeleteSuccess": "Успешно групово изтриване",
+  "ToastBatchQuickMatchFailed": "Груповото Бързо Съвпадение се провали!",
+  "ToastBatchQuickMatchStarted": "Груповото Бързо Съвпадение на {0} книги започна!",
   "ToastBatchUpdateFailed": "Неуспешно групово актуализиране",
   "ToastBatchUpdateSuccess": "Успешно групово актуализиране",
   "ToastBookmarkCreateFailed": "Неуспешно създаване на отметка",
   "ToastBookmarkCreateSuccess": "Отметката е създадена",
   "ToastBookmarkRemoveSuccess": "Отметката е премахната",
+  "ToastBulkChapterInvalidCount": "Въведете число между 1 и 150",
   "ToastCachePurgeFailed": "Неуспешно изчистване на кеша",
   "ToastCachePurgeSuccess": "Успешно изчистване на кеша",
+  "ToastChapterLocked": "Главата е заключена.",
+  "ToastChapterStartTimeAdjusted": "Начално време на главате е настоено с {0} секунди",
+  "ToastChaptersAllLocked": "Всички глави са заключени. Оключете някой глави за да преместите техните времена.",
   "ToastChaptersHaveErrors": "Главите имат грешки",
   "ToastChaptersMustHaveTitles": "Главите трябва да имат заглавия",
   "ToastCollectionRemoveSuccess": "Колекцията е премахната",
diff --git a/client/strings/de.json b/client/strings/de.json
index ed0cae52..4d9ecd41 100644
--- a/client/strings/de.json
+++ b/client/strings/de.json
@@ -116,7 +116,7 @@
   "ButtonViewAll": "Alles anzeigen",
   "ButtonYes": "Ja",
   "ErrorUploadFetchMetadataAPI": "Fehler beim Abrufen der Metadaten",
-  "ErrorUploadFetchMetadataNoResults": "Metadaten konnten nicht abgerufen werden. Versuche, den Titel und/oder den Autor zu aktualisieren.",
+  "ErrorUploadFetchMetadataNoResults": "Metadaten konnten nicht abgerufen werden - versuche den Titel und/oder den Autor zu aktualisieren",
   "ErrorUploadLacksTitle": "Es muss ein Titel eingegeben werden",
   "HeaderAccount": "Konto",
   "HeaderAddCustomMetadataProvider": "Benutzerdefinierten Metadatenanbieter hinzufügen",
@@ -622,7 +622,7 @@
   "LabelSettingsStoreMetadataWithItemHelp": "Standardmäßig werden die Metadaten in /metadata/items gespeichert. Wenn diese Option aktiviert ist, werden die Metadaten als OPF-Datei (Textdatei) in dem gleichen Ordner gespeichert in welchem sich auch das Medium befindet",
   "LabelSettingsTimeFormat": "Zeitformat",
   "LabelShare": "Freigeben",
-  "LabelShareDownloadableHelp": "Erlaubt es einem Nutzer, mit dem Link, die Dateien des Mediums als ZIP herunterzuladen.",
+  "LabelShareDownloadableHelp": "Erlaubt es einem Nutzer, mit dem Link die Dateien des Mediums als ZIP herunterzuladen.",
   "LabelShareOpen": "Freigeben",
   "LabelShareURL": "Freigabe URL",
   "LabelShowAll": "Alles anzeigen",
@@ -737,7 +737,7 @@
   "MessageAddToPlayerQueue": "Zur Abspielwarteliste hinzufügen",
   "MessageAppriseDescription": "Um diese Funktion nutzen zu können, musst du eine Instanz von <a href=\"https://github.com/caronc/apprise-api\" target=\"_blank\">Apprise API</a> laufen haben oder eine API verwenden welche dieselbe Anfragen bearbeiten kann. <br />Die Apprise API Url muss der vollständige URL-Pfad sein, an den die Benachrichtigung gesendet werden soll, z.B. wenn Ihre API-Instanz unter <code>http://192.168.1.1:8337</code> läuft, würdest du <code>http://192.168.1.1:8337/notify</code> eingeben.",
   "MessageAsinCheck": "Stelle sicher, dass die ASIN aus der richtigen Audible Region verwendet wird, nicht Amazon.",
-  "MessageAuthenticationLegacyTokenWarning": "Alte API-Token werden in Zukunft entfernt. Benutze stattdessen <a href=\"/config/api-keys\">API Keys</a>.",
+  "MessageAuthenticationLegacyTokenWarning": "Nicht mehr unterstützte API tokens werden in der Zukunft entfernt. Nutze stattdessen <a href=\"/config/api-keys\">API Schlüssel</a>.",
   "MessageAuthenticationOIDCChangesRestart": "Nach dem Speichern muss der Server neugestartet werden um die OIDC Änderungen zu übernehmen.",
   "MessageAuthenticationSecurityMessage": "Die Anmeldung wurde abgesichert. Benutzersitzungen werden getrennt, alle Benutzer müssen sich erneut anmelden.",
   "MessageBackupsDescription": "In einer Sicherung werden Benutzer, Benutzerfortschritte, Details zu den Bibliotheksobjekten, Servereinstellungen und Bilder welche in <code>/metadata/items</code> & <code>/metadata/authors</code> gespeichert sind gespeichert. Sicherungen enthalten keine Dateien welche in den einzelnen Bibliotheksordnern (Medien-Ordnern) gespeichert sind.",
@@ -816,7 +816,7 @@
   "MessageFeedURLWillBe": "Feed-URL wird {0} sein",
   "MessageFetching": "Wird abgerufen …",
   "MessageForceReScanDescription": "Durchsucht alle Dateien erneut, wie bei einem frischen Scan. ID3-Tags von Audiodateien, OPF-Dateien und Textdateien werden neu durchsucht.",
-  "MessageHeatmapListeningTimeTooltip": "<strong>{0} </strong> auf {1} gehört",
+  "MessageHeatmapListeningTimeTooltip": "<strong>{0} gehört</strong> auf {1}",
   "MessageHeatmapNoListeningSessions": "Keine Hörsitzungen am {0}",
   "MessageImportantNotice": "Wichtiger Hinweis!",
   "MessageInsertChapterBelow": "Kapitel unten einfügen",
@@ -1103,7 +1103,7 @@
   "ToastPodcastCreateFailed": "Podcast konnte nicht erstellt werden",
   "ToastPodcastCreateSuccess": "Podcast erstellt",
   "ToastPodcastEpisodeUpdated": "Podcast-Folge aktualisiert",
-  "ToastPodcastGetFeedFailed": "Fehler beim abrufen des Podcast-Feeds",
+  "ToastPodcastGetFeedFailed": "Fehler beim Abrufen des Podcast Feeds",
   "ToastPodcastNoEpisodesInFeed": "Keine Episoden in RSS Feed gefunden",
   "ToastPodcastNoRssFeed": "Podcast enthält keinen RSS Feed",
   "ToastProgressIsNotBeingSynced": "Fortschritt wird nicht synchronisiert, Wiedergabe wird neu gestartet",
diff --git a/client/strings/es.json b/client/strings/es.json
index eae32bd9..e9655563 100644
--- a/client/strings/es.json
+++ b/client/strings/es.json
@@ -40,7 +40,7 @@
   "ButtonFullPath": "Ruta completa",
   "ButtonHide": "Ocultar",
   "ButtonHome": "Inicio",
-  "ButtonIssues": "Cuestiones",
+  "ButtonIssues": "Incidencias",
   "ButtonJumpBackward": "Retroceder",
   "ButtonJumpForward": "Adelantar",
   "ButtonLatest": "Más recientes",
@@ -850,7 +850,7 @@
   "MessageNoEpisodes": "Ningún episodio",
   "MessageNoFoldersAvailable": "Ninguna carpeta disponible",
   "MessageNoGenres": "Ningún género",
-  "MessageNoIssues": "Ningún número",
+  "MessageNoIssues": "Sin incidencias",
   "MessageNoItems": "Ningún elemento",
   "MessageNoItemsFound": "Ningún elemento encontrado",
   "MessageNoListeningSessions": "Ninguna sesión de escucha",
@@ -1116,8 +1116,8 @@
   "ToastRemoveFailed": "Error al eliminar",
   "ToastRemoveItemFromCollectionFailed": "Error al eliminar el elemento de la colección",
   "ToastRemoveItemFromCollectionSuccess": "Elemento eliminado de la colección",
-  "ToastRemoveItemsWithIssuesFailed": "Error en la eliminación de artículos de biblioteca incorrectos",
-  "ToastRemoveItemsWithIssuesSuccess": "Se eliminaron artículos de biblioteca incorrectos",
+  "ToastRemoveItemsWithIssuesFailed": "Error en la eliminación de artículos de biblioteca con incidencias",
+  "ToastRemoveItemsWithIssuesSuccess": "Se eliminaron artículos de biblioteca con incidencias",
   "ToastRenameFailed": "Error al cambiar el nombre",
   "ToastRescanFailed": "Error al volver a escanear para {0}",
   "ToastRescanRemoved": "Se eliminó el elemento reescaneado",
diff --git a/client/strings/it.json b/client/strings/it.json
index d2178cbf..4b392162 100644
--- a/client/strings/it.json
+++ b/client/strings/it.json
@@ -34,7 +34,7 @@
   "ButtonEditChapters": "Modifica Capitoli",
   "ButtonEditPodcast": "Modifica Podcast",
   "ButtonEnable": "Abilita",
-  "ButtonFireAndFail": "Fire and Fail",
+  "ButtonFireAndFail": "Centro e fallimento",
   "ButtonFireOnTest": "Fire onTest event",
   "ButtonForceReScan": "Forza Re-Scan",
   "ButtonFullPath": "Percorso Completo",
@@ -182,7 +182,7 @@
   "HeaderPlaylist": "Playlist",
   "HeaderPlaylistItems": "Elementi della playlist",
   "HeaderPodcastsToAdd": "Podcasts da Aggiungere",
-  "HeaderPresets": "Presets",
+  "HeaderPresets": "Preimpostazioni",
   "HeaderPreviewCover": "Anteprima Cover",
   "HeaderRSSFeedGeneral": "Dettagli RSS",
   "HeaderRSSFeedIsOpen": "RSS Feed è aperto",
@@ -306,7 +306,7 @@
   "LabelCustomCronExpression": "Espressione Cron personalizzata:",
   "LabelDatetime": "Data & Ora",
   "LabelDays": "Giorni",
-  "LabelDeleteFromFileSystemCheckbox": "Elimina dal file system (togli la spunta per eliminarla solo dal DB)",
+  "LabelDeleteFromFileSystemCheckbox": "Elimina dal file system (despunta per rimuoverla solo dal database)",
   "LabelDescription": "Descrizione",
   "LabelDeselectAll": "Deseleziona Tutto",
   "LabelDetectedPattern": "Trovato pattern:",
@@ -436,9 +436,9 @@
   "LabelLibraryFilterSublistEmpty": "Nessuno {0}",
   "LabelLibraryItem": "Elementi della biblioteca",
   "LabelLibraryName": "Nome della biblioteca",
-  "LabelLibrarySortByProgress": "Progressi: Ultimi aggiornamenti",
-  "LabelLibrarySortByProgressFinished": "Progressi: Completati",
-  "LabelLibrarySortByProgressStarted": "Progressi: Iniziati",
+  "LabelLibrarySortByProgress": "Progresso: ultimo aggiornamento",
+  "LabelLibrarySortByProgressFinished": "Progresso: finito",
+  "LabelLibrarySortByProgressStarted": "Progresso: iniziato",
   "LabelLimit": "Limiti",
   "LabelLineSpacing": "Interlinea",
   "LabelListenAgain": "Ascolta ancora",
@@ -497,7 +497,7 @@
   "LabelNumberOfBooks": "Numero di libri",
   "LabelNumberOfChapters": "Numero di capitoli:",
   "LabelNumberOfEpisodes": "Numero di episodi",
-  "LabelOpenIDAdvancedPermsClaimDescription": "Nome dell'attestazione OpenID che contiene autorizzazioni avanzate per le azioni dell'utente all'interno dell'applicazione che verranno applicate ai ruoli non amministratori (<b>se configurato</b>). Se il reclamo manca nella risposta, l'accesso ad ABS verrà negato. Se manca una singola opzione, verrà trattata come<code>falsa</code>. Assicurati che l'attestazione del provider di identità corrisponda alla struttura prevista:",
+  "LabelOpenIDAdvancedPermsClaimDescription": "Nome dell'attestazione OpenID che contiene autorizzazioni avanzate per le azioni dell'utente all'interno dell'applicazione che verranno applicate ai ruoli non amministrativi (<b>se configurato</b>). Se il reclamo manca nella risposta, l'accesso ad ABS verrà negato. Se manca una singola opzione, verrà trattata come <code>falso</code>. Assicurati che l'attestazione del provider di identità corrisponda alla struttura prevista:",
   "LabelOpenIDClaims": "Lasciare vuote le seguenti opzioni per disabilitare l'assegnazione avanzata di gruppi e autorizzazioni, assegnando quindi automaticamente il gruppo \"Utente\".",
   "LabelOpenIDGroupClaimDescription": "Nome dell'attestazione OpenID che contiene un elenco dei gruppi dell'utente. Comunemente indicato come <code>gruppo</code>. <b>se configurato</b>, l'applicazione assegnerà automaticamente i ruoli in base alle appartenenze ai gruppi dell'utente, a condizione che tali gruppi siano denominati \"admin\", \"utente\" o \"ospite\" senza distinzione tra maiuscole e minuscole nell'attestazione. L'attestazione deve contenere un elenco e, se un utente appartiene a più gruppi, l'applicazione assegnerà il ruolo corrispondente al livello di accesso più alto. Se nessun gruppo corrisponde, l'accesso verrà negato.",
   "LabelOpenRSSFeed": "Apri RSS Feed",
@@ -530,7 +530,7 @@
   "LabelPrimaryEbook": "Libro principale",
   "LabelProgress": "Cominciati",
   "LabelProvider": "Fornitore",
-  "LabelProviderAuthorizationValue": "Authorization Header Value",
+  "LabelProviderAuthorizationValue": "Valore intestazione di autorizzazione",
   "LabelPubDate": "Data di pubblicazione",
   "LabelPublishYear": "Anno di pubblicazione",
   "LabelPublishedDate": "Pubblicati {0}",
@@ -674,7 +674,7 @@
   "LabelTimeDurationXMinutes": "{0} minuti",
   "LabelTimeDurationXSeconds": "{0} secondi",
   "LabelTimeInMinutes": "Tempo in minuti",
-  "LabelTimeLeft": "{0} sinistra",
+  "LabelTimeLeft": "{0} rimasti",
   "LabelTimeListened": "Tempo di Ascolto",
   "LabelTimeListenedToday": "Tempo di Ascolto Oggi",
   "LabelTimeRemaining": "{0} rimanente",
@@ -682,7 +682,7 @@
   "LabelTitle": "Titolo",
   "LabelToolsEmbedMetadata": "Incorpora Metadata",
   "LabelToolsEmbedMetadataDescription": "Incorpora i metadati nei file audio, inclusi l'immagine di copertina e i capitoli.",
-  "LabelToolsM4bEncoder": "M4B Encoder",
+  "LabelToolsM4bEncoder": "Codificatore M4B",
   "LabelToolsMakeM4b": "Crea un file M4B",
   "LabelToolsMakeM4bDescription": "Genera un file audiolibro M4B con metadati incorporati, immagine di copertina e capitoli.",
   "LabelToolsSplitM4b": "Converti M4B in MP3",
@@ -854,7 +854,7 @@
   "MessageNoItems": "Nessun oggetto",
   "MessageNoItemsFound": "Nessun oggetto trovato",
   "MessageNoListeningSessions": "Nessuna sessione di ascolto",
-  "MessageNoLogs": "Nessun Log",
+  "MessageNoLogs": "Nessun rapporto",
   "MessageNoMediaProgress": "Nessun progresso multimediale",
   "MessageNoNotifications": "Nessuna notifica",
   "MessageNoPodcastFeed": "Podcast non valido: nessun feed",
@@ -1109,7 +1109,7 @@
   "ToastProgressIsNotBeingSynced": "L'avanzamento non è sincronizzato, riavviare la riproduzione",
   "ToastProviderCreatedFailed": "Impossibile aggiungere il provider",
   "ToastProviderCreatedSuccess": "Aggiunto nuovo provider",
-  "ToastProviderNameAndUrlRequired": "Nome e URL richiesti",
+  "ToastProviderNameAndUrlRequired": "Nome e Url richiesti",
   "ToastProviderRemoveSuccess": "Provider rimosso",
   "ToastRSSFeedCloseFailed": "Errore chiusura flusso RSS",
   "ToastRSSFeedCloseSuccess": "Flusso RSS chiuso",
diff --git a/client/strings/ru.json b/client/strings/ru.json
index c84fe9dc..ed3f18b8 100644
--- a/client/strings/ru.json
+++ b/client/strings/ru.json
@@ -392,7 +392,7 @@
   "LabelGenre": "Жанр",
   "LabelGenres": "Жанры",
   "LabelHardDeleteFile": "Жесткое удаление файла",
-  "LabelHasEbook": "Есть e-книга",
+  "LabelHasEbook": "Есть электронная книга",
   "LabelHasSupplementaryEbook": "Есть дополнительная e-книга",
   "LabelHideSubtitles": "Скрыть серии",
   "LabelHighestPriority": "Наивысший приоритет",
@@ -437,8 +437,8 @@
   "LabelLibraryItem": "Элемент библиотеки",
   "LabelLibraryName": "Имя библиотеки",
   "LabelLibrarySortByProgress": "Прогресс: Последнее обновление",
-  "LabelLibrarySortByProgressFinished": "Прогресс: Завершено",
-  "LabelLibrarySortByProgressStarted": "Прогресс: Начато",
+  "LabelLibrarySortByProgressFinished": "Прогресс: Закончена",
+  "LabelLibrarySortByProgressStarted": "Прогресс: Начата",
   "LabelLimit": "Лимит",
   "LabelLineSpacing": "Межстрочный интервал",
   "LabelListenAgain": "Послушать снова",
diff --git a/client/strings/sk.json b/client/strings/sk.json
index 6101eba7..23ed276e 100644
--- a/client/strings/sk.json
+++ b/client/strings/sk.json
@@ -275,7 +275,7 @@
   "LabelBonus": "Bonus",
   "LabelBooks": "Knihy",
   "LabelButtonText": "Text tlačidla",
-  "LabelByAuthor": "od",
+  "LabelByAuthor": "od {0}",
   "LabelChangePassword": "Zmeniť heslo",
   "LabelChannels": "Kanály",
   "LabelChapterCount": "{0} kapitol",
diff --git a/package-lock.json b/package-lock.json
index d8cc43bc..250390c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "audiobookshelf",
-  "version": "2.33.1",
+  "version": "2.33.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "audiobookshelf",
-      "version": "2.33.1",
+      "version": "2.33.2",
       "license": "GPL-3.0",
       "dependencies": {
         "axios": "^0.27.2",
diff --git a/package.json b/package.json
index d44df116..810863f9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf",
-  "version": "2.33.1",
+  "version": "2.33.2",
   "buildNumber": 1,
   "description": "Self-hosted audiobook and podcast server",
   "main": "index.js",
diff --git a/server/controllers/AuthorController.js b/server/controllers/AuthorController.js
index 82ed3e50..80471ec4 100644
--- a/server/controllers/AuthorController.js
+++ b/server/controllers/AuthorController.js
@@ -10,7 +10,7 @@ const CacheManager = require('../managers/CacheManager')
 const CoverManager = require('../managers/CoverManager')
 const AuthorFinder = require('../finders/AuthorFinder')
 
-const { reqSupportsWebp, isValidASIN } = require('../utils/index')
+const { reqSupportsWebp, isValidASIN, clampPositiveInt } = require('../utils/index')
 
 const naturalSort = createNewSortInstance({
   comparer: new Intl.Collator(undefined, { numeric: true, sensitivity: 'base' }).compare
@@ -412,8 +412,8 @@ class AuthorController {
 
     const options = {
       format: format || (reqSupportsWebp(req) ? 'webp' : 'jpeg'),
-      height: height ? parseInt(height) : null,
-      width: width ? parseInt(width) : null
+      height: clampPositiveInt(height ? parseInt(height) : null, 4096),
+      width: clampPositiveInt(width ? parseInt(width) : null, 4096)
     }
     return CacheManager.handleAuthorCache(res, authorId, options)
   }
diff --git a/server/controllers/FileSystemController.js b/server/controllers/FileSystemController.js
index 4b0a94b3..41e082fd 100644
--- a/server/controllers/FileSystemController.js
+++ b/server/controllers/FileSystemController.js
@@ -117,7 +117,7 @@ class FileSystemController {
     filepath = fileUtils.filePathToPOSIX(filepath)
 
     // Ensure filepath is inside library folder (prevents directory traversal)
-    if (!filepath.startsWith(libraryFolder.path)) {
+    if (!fileUtils.isSameOrSubPath(libraryFolder.path, filepath)) {
       Logger.error(`[FileSystemController] Filepath is not inside library folder: ${filepath}`)
       return res.sendStatus(400)
     }
diff --git a/server/controllers/LibraryController.js b/server/controllers/LibraryController.js
index 55ef4569..73b3d5c6 100644
--- a/server/controllers/LibraryController.js
+++ b/server/controllers/LibraryController.js
@@ -462,7 +462,7 @@ class LibraryController {
               }
             }
             Logger.info(`[LibraryController] Removing library item "${libraryItem.id}" from folder "${folder.path}"`)
-            await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds)
+            await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds, req.library.id)
           }
 
           if (authorIds.length) {
@@ -563,7 +563,7 @@ class LibraryController {
         mediaItemIds.push(libraryItem.mediaId)
       }
       Logger.info(`[LibraryController] Removing library item "${libraryItem.id}" from library "${req.library.name}"`)
-      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds)
+      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds, req.library.id)
     }
 
     // Set PlaybackSessions libraryId to null
@@ -714,7 +714,7 @@ class LibraryController {
         }
       }
       Logger.info(`[LibraryController] Removing library item "${libraryItem.id}" with issue`)
-      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds)
+      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds, req.library.id)
     }
 
     if (authorIds.length) {
@@ -1435,10 +1435,15 @@ class LibraryController {
     const libraryItems = await Database.libraryItemModel.findAll({
       attributes: ['id', 'libraryId', 'path', 'isFile'],
       where: {
-        id: itemIds
+        id: itemIds,
+        libraryId: req.library.id
       }
     })
 
+    if (libraryItems.length < itemIds.length) {
+      Logger.warn(`[LibraryController] User "${req.user.username}" requested ${itemIds.length} items but only ${libraryItems.length} are in library "${req.library.id}"`)
+    }
+
     Logger.info(`[LibraryController] User "${req.user.username}" requested download for items "${itemIds}"`)
 
     const filename = `LibraryItems-${Date.now()}.zip`
diff --git a/server/controllers/LibraryItemController.js b/server/controllers/LibraryItemController.js
index 5247dbb0..1a6b8ac1 100644
--- a/server/controllers/LibraryItemController.js
+++ b/server/controllers/LibraryItemController.js
@@ -7,7 +7,7 @@ const SocketAuthority = require('../SocketAuthority')
 const Database = require('../Database')
 
 const zipHelpers = require('../utils/zipHelpers')
-const { reqSupportsWebp } = require('../utils/index')
+const { reqSupportsWebp, clampPositiveInt } = require('../utils/index')
 const { ScanResult, AudioMimeType } = require('../utils/constants')
 const { getAudioMimeTypeFromExtname, encodeUriPath } = require('../utils/fileUtils')
 const LibraryItemScanner = require('../scanner/LibraryItemScanner')
@@ -111,7 +111,7 @@ class LibraryItemController {
       }
     }
 
-    await this.handleDeleteLibraryItem(req.libraryItem.id, mediaItemIds)
+    await this.handleDeleteLibraryItem(req.libraryItem.id, mediaItemIds, req.libraryItem.libraryId)
     if (hardDelete) {
       Logger.info(`[LibraryItemController] Deleting library item from file system at "${libraryItemPath}"`)
       await fs.remove(libraryItemPath).catch((error) => {
@@ -398,8 +398,8 @@ class LibraryItemController {
 
     const options = {
       format: format || (reqSupportsWebp(req) ? 'webp' : 'jpeg'),
-      height: height ? parseInt(height) : null,
-      width: width ? parseInt(width) : null
+      height: clampPositiveInt(height ? parseInt(height) : null, 4096),
+      width: clampPositiveInt(width ? parseInt(width) : null, 4096)
     }
     return CacheManager.handleCoverCache(res, libraryItemId, options)
   }
@@ -565,7 +565,7 @@ class LibraryItemController {
           authorIds.push(...libraryItem.media.authors.map((au) => au.id))
         }
       }
-      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds)
+      await this.handleDeleteLibraryItem(libraryItem.id, mediaItemIds, libraryItem.libraryId)
       if (hardDelete) {
         Logger.info(`[LibraryItemController] Deleting library item from file system at "${libraryItemPath}"`)
         await fs.remove(libraryItemPath).catch((error) => {
diff --git a/server/controllers/PodcastController.js b/server/controllers/PodcastController.js
index c7028760..f099d05e 100644
--- a/server/controllers/PodcastController.js
+++ b/server/controllers/PodcastController.js
@@ -7,7 +7,7 @@ const Database = require('../Database')
 const fs = require('../libs/fsExtra')
 
 const { getPodcastFeed, findMatchingEpisodes } = require('../utils/podcastUtils')
-const { getFileTimestampsWithIno, filePathToPOSIX } = require('../utils/fileUtils')
+const { getFileTimestampsWithIno, filePathToPOSIX, isSameOrSubPath } = require('../utils/fileUtils')
 const { validateUrl } = require('../utils/index')
 const htmlSanitizer = require('../utils/htmlSanitizer')
 
@@ -58,8 +58,18 @@ class PodcastController {
       return res.status(404).send('Folder not found')
     }
 
+    if (typeof payload.path !== 'string' || !payload.path.trim()) {
+      return res.status(400).send('Invalid request body. "path" must be a non-empty string')
+    }
+
+    const libraryFolderPath = filePathToPOSIX(folder.path)
     const podcastPath = filePathToPOSIX(payload.path)
 
+    if (!isSameOrSubPath(libraryFolderPath, podcastPath)) {
+      Logger.error(`[PodcastController] Create: Podcast path is outside library folder "${libraryFolderPath}": "${podcastPath}"`)
+      return res.status(400).send('Podcast path must be inside the selected library folder')
+    }
+
     // Check if a library item with this podcast folder exists already
     const existingLibraryItem =
       (await Database.libraryItemModel.count({
@@ -83,7 +93,7 @@ class PodcastController {
 
     const libraryItemFolderStats = await getFileTimestampsWithIno(podcastPath)
 
-    let relPath = payload.path.replace(folder.fullPath, '')
+    let relPath = podcastPath.replace(libraryFolderPath, '')
     if (relPath.startsWith('/')) relPath = relPath.slice(1)
 
     let newLibraryItem = null
diff --git a/server/managers/BackupManager.js b/server/managers/BackupManager.js
index 2697f94e..a7b531e6 100644
--- a/server/managers/BackupManager.js
+++ b/server/managers/BackupManager.js
@@ -126,13 +126,31 @@ class BackupManager {
     } catch (error) {
       // Not a valid zip file
       Logger.error('[BackupManager] Failed to read backup file - backup might not be a valid .zip file', tempPath, error)
+      await zip.close().catch(() => {})
+      await fs.remove(tempPath).catch((err) => Logger.error(`[BackupManager] Failed to remove rejected backup file "${tempPath}"`, err))
       return res.status(400).send('Failed to read backup file - backup might not be a valid .zip file')
     }
-    if (!Object.keys(entries).includes('absdatabase.sqlite')) {
+    if (!entries['absdatabase.sqlite']) {
       Logger.error(`[BackupManager] Invalid backup with no absdatabase.sqlite file - might be a backup created on an old Audiobookshelf server.`)
+      await zip.close().catch(() => {})
+      await fs.remove(tempPath).catch((err) => Logger.error(`[BackupManager] Failed to remove rejected backup file "${tempPath}"`, err))
       return res.status(500).send('Invalid backup with no absdatabase.sqlite file - might be a backup created on an old Audiobookshelf server.')
     }
 
+    const detailsEntry = entries['details']
+    if (!detailsEntry) {
+      Logger.error('[BackupManager] Invalid backup - missing details entry')
+      await zip.close().catch(() => {})
+      await fs.remove(tempPath).catch((err) => Logger.error(`[BackupManager] Failed to remove rejected backup file "${tempPath}"`, err))
+      return res.status(400).send('Invalid backup file - missing details entry')
+    }
+    if (detailsEntry.size > 1024 * 1024) {
+      Logger.error(`[BackupManager] Backup details entry too large: ${detailsEntry.size} bytes`)
+      await zip.close().catch(() => {})
+      await fs.remove(tempPath).catch((err) => Logger.error(`[BackupManager] Failed to remove rejected backup file "${tempPath}"`, err))
+      return res.status(400).send('Invalid backup file - details entry too large')
+    }
+
     const data = await zip.entryData('details')
     const details = data.toString('utf8').split('\n')
 
@@ -140,9 +158,13 @@ class BackupManager {
 
     if (!backup.serverVersion) {
       Logger.error(`[BackupManager] Invalid backup with no server version - might be a backup created before version 2.0.0`)
+      await zip.close().catch(() => {})
+      await fs.remove(tempPath).catch((err) => Logger.error(`[BackupManager] Failed to remove rejected backup file "${tempPath}"`, err))
       return res.status(500).send('Invalid backup. Might be a backup created before version 2.0.0.')
     }
 
+    await zip.close().catch(() => {})
+
     backup.fileSize = await getFileSize(backup.fullPath)
 
     const existingBackupIndex = this.backups.findIndex((b) => b.id === backup.id)
@@ -257,9 +279,24 @@ class BackupManager {
           let data = null
           try {
             zip = new StreamZip.async({ file: fullFilePath })
+            const entries = await zip.entries()
+
+            const detailsEntry = entries['details']
+            if (!detailsEntry) {
+              Logger.error(`[BackupManager] Backup "${fullFilePath}" missing details entry - skipping`)
+              await zip.close().catch(() => {})
+              continue
+            }
+            if (detailsEntry.size > 1024 * 1024) {
+              Logger.error(`[BackupManager] Backup "${fullFilePath}" details entry too large (${detailsEntry.size} bytes) - skipping`)
+              await zip.close().catch(() => {})
+              continue
+            }
+
             data = await zip.entryData('details')
           } catch (error) {
             Logger.error(`[BackupManager] Failed to unzip backup "${fullFilePath}"`, error)
+            if (zip) await zip.close().catch(() => {})
             continue
           }
 
diff --git a/server/models/Author.js b/server/models/Author.js
index 287b6697..65561e21 100644
--- a/server/models/Author.js
+++ b/server/models/Author.js
@@ -111,16 +111,17 @@ class Author extends Model {
    *
    * @param {string} name
    * @param {string} libraryId
-   * @returns {Promise<Author>}
+   * @returns {Promise<{ author: Author, created: boolean }>}
    */
   static async findOrCreateByNameAndLibrary(name, libraryId) {
     const author = await this.getByNameAndLibrary(name, libraryId)
-    if (author) return author
-    return this.create({
+    if (author) return { author, created: false }
+    const newAuthor = await this.create({
       name,
       lastFirst: this.getLastFirst(name),
       libraryId
     })
+    return { author: newAuthor, created: true }
   }
 
   /**
diff --git a/server/models/Book.js b/server/models/Book.js
index 96371f3a..d9f2ff13 100644
--- a/server/models/Book.js
+++ b/server/models/Book.js
@@ -4,6 +4,7 @@ const { getTitlePrefixAtEnd, getTitleIgnorePrefix } = require('../utils')
 const parseNameString = require('../utils/parsers/parseNameString')
 const htmlSanitizer = require('../utils/htmlSanitizer')
 const libraryItemsBookFilters = require('../utils/queries/libraryItemsBookFilters')
+const SocketAuthority = require('../SocketAuthority')
 
 /**
  * @typedef EBookFileObject
@@ -470,13 +471,23 @@ class Book extends Model {
 
     for (const author of authorsRemoved) {
       await bookAuthorModel.removeByIds(author.id, this.id)
+      const numBooks = await bookAuthorModel.getCountForAuthor(author.id)
+      if (numBooks > 0) {
+        SocketAuthority.emitter('author_updated', author.toOldJSONExpanded(numBooks))
+      }
       Logger.debug(`[Book] "${this.title}" Removed author "${author.name}"`)
       this.authors = this.authors.filter((au) => au.id !== author.id)
     }
     const authorsAdded = []
     for (const authorName of newAuthorNames) {
-      const author = await authorModel.findOrCreateByNameAndLibrary(authorName, libraryId)
+      const { author, created } = await authorModel.findOrCreateByNameAndLibrary(authorName, libraryId)
       await bookAuthorModel.create({ bookId: this.id, authorId: author.id })
+      if (created) {
+        SocketAuthority.emitter('author_added', author.toOldJSON())
+      } else {
+        const numBooks = await bookAuthorModel.getCountForAuthor(author.id)
+        SocketAuthority.emitter('author_updated', author.toOldJSONExpanded(numBooks))
+      }
       Logger.debug(`[Book] "${this.title}" Added author "${author.name}"`)
       this.authors.push(author)
       authorsAdded.push(author)
diff --git a/server/objects/PlaybackSession.js b/server/objects/PlaybackSession.js
index ba031b66..ace0256e 100644
--- a/server/objects/PlaybackSession.js
+++ b/server/objects/PlaybackSession.js
@@ -110,7 +110,8 @@ class PlaybackSession {
       startedAt: this.startedAt,
       updatedAt: this.updatedAt,
       audioTracks: this.audioTracks.map((at) => at.toJSON?.() || { ...at }),
-      libraryItem: libraryItem?.toOldJSONExpanded() || null
+      libraryItem: libraryItem?.toOldJSONExpanded() || null,
+      coverAspectRatio: this.coverAspectRatio !== null ? this.coverAspectRatio : undefined // Used for share sessions
     }
   }
 
diff --git a/server/objects/Stream.js b/server/objects/Stream.js
index 5aa013e8..70361463 100644
--- a/server/objects/Stream.js
+++ b/server/objects/Stream.js
@@ -73,7 +73,7 @@ class Stream extends EventEmitter {
     return [AudioMimeType.FLAC, AudioMimeType.OPUS, AudioMimeType.WMA, AudioMimeType.AIFF, AudioMimeType.WEBM, AudioMimeType.WEBMA, AudioMimeType.AWB, AudioMimeType.CAF]
   }
   get codecsToForceAAC() {
-    return ['alac', 'ac3', 'eac3']
+    return ['alac', 'ac3', 'eac3', 'opus']
   }
   get userToken() {
     return this.user.token
diff --git a/server/routers/ApiRouter.js b/server/routers/ApiRouter.js
index db04bf5e..e89b364f 100644
--- a/server/routers/ApiRouter.js
+++ b/server/routers/ApiRouter.js
@@ -363,8 +363,9 @@ class ApiRouter {
    * Remove library item and associated entities
    * @param {string} libraryItemId
    * @param {string[]} mediaItemIds array of bookId or podcastEpisodeId
+   * @param {string} libraryId
    */
-  async handleDeleteLibraryItem(libraryItemId, mediaItemIds) {
+  async handleDeleteLibraryItem(libraryItemId, mediaItemIds, libraryId) {
     const numProgressRemoved = await Database.mediaProgressModel.destroy({
       where: {
         mediaItemId: mediaItemIds
@@ -395,7 +396,8 @@ class ApiRouter {
     await Database.libraryItemModel.removeById(libraryItemId)
 
     SocketAuthority.emitter('item_removed', {
-      id: libraryItemId
+      id: libraryItemId,
+      libraryId
     })
   }
 
diff --git a/server/utils/constants.js b/server/utils/constants.js
index cc5217f4..925035e1 100644
--- a/server/utils/constants.js
+++ b/server/utils/constants.js
@@ -48,6 +48,8 @@ module.exports.AudioMimeType = {
   AIF: 'audio/x-aiff',
   WEBM: 'audio/webm',
   WEBMA: 'audio/webm',
+  // TODO: Switch to `audio/matroska`? marked as deprecated in IANA registry
+  // ref: https://datatracker.ietf.org/doc/html/rfc9559
   MKA: 'audio/x-matroska',
   AWB: 'audio/amr-wb',
   CAF: 'audio/x-caf',
diff --git a/server/utils/index.js b/server/utils/index.js
index c7700a78..49a7c8e6 100644
--- a/server/utils/index.js
+++ b/server/utils/index.js
@@ -54,6 +54,16 @@ module.exports.isNullOrNaN = (num) => {
   return num === null || isNaN(num)
 }
 
+/**
+ * @param {number|null|undefined} value
+ * @param {number} max
+ * @returns {number|null}
+ */
+module.exports.clampPositiveInt = (value, max) => {
+  if (value == null || !Number.isFinite(value) || value <= 0) return null
+  return Math.min(Math.floor(value), max)
+}
+
 const xmlToJSON = (xml) => {
   return new Promise((resolve, reject) => {
     parseString(xml, (err, results) => {
diff --git a/server/utils/podcastUtils.js b/server/utils/podcastUtils.js
index 2042a8e3..1cb0c4cb 100644
--- a/server/utils/podcastUtils.js
+++ b/server/utils/podcastUtils.js
@@ -217,6 +217,10 @@ function extractEpisodeData(item) {
     episode[cleanKey] = extractFirstArrayItemString(item, key)
   })
 
+  if (episode.subtitle) {
+    episode.subtitle = htmlSanitizer.sanitize(episode.subtitle.trim())
+  }
+
   // Extract psc:chapters if duration is set
   episode.durationSeconds = episode.duration ? timestampToSeconds(episode.duration) : null