diff --git a/package.json b/package.json
index c7af1e9..b3c036b 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "@fontsource/noto-sans-tc": "^4.5.11",
     "@fontsource/nunito-sans": "^4.5.9",
     "@fontsource/roboto": "^4.5.8",
+    "@formatjs/intl-localematcher": "^0.2.31",
     "@mdi/js": "^6.9.96",
     "antar-hinted": "https://bafybeifmuaik6ozj65yoy443khijb6d5pqkmi4dwgykfzfvymtvc57mo6i.ipfs.cf-ipfs.com/?filename=hinted-antar-web.tar",
     "axios": "^0.27.2",
diff --git a/src/components/Player.vue b/src/components/Player.vue
index c41d849..ae5c4f2 100644
--- a/src/components/Player.vue
+++ b/src/components/Player.vue
@@ -15,9 +15,9 @@
 </template>
 
 <script>
-import muxjs from 'mux.js'
 import shaka from 'shaka-player/dist/shaka-player.ui.js'
 import 'shaka-player/dist/controls.css'
+import * as LocaleMatcher from '@formatjs/intl-localematcher'
 
 import { DashUtils } from '@/tools/DashUtils'
 import '@/components/Player.scss'
@@ -28,7 +28,11 @@ import '@fontsource/roboto/latin.css'
 
 import { setupKeybindings } from 'psychic-tiny-keys'
 
-window.muxjs = muxjs
+if (!window.muxjs) {
+	import('mux.js').then(m => {
+		window.muxjs = m
+	})
+}
 
 export default {
 	props: {
@@ -142,8 +146,7 @@ export default {
 					const url = new URL(uri)
 					const headers = request.headers
 					if (
-						url.host.endsWith('.googlevideo.com') ||
-            (url.host.endsWith('.lbryplayer.xyz') && (this.$store.getters['prefs/getPreferenceBoolean']('proxyLBRY', true) || headers.Range))
+						url.host.endsWith('.googlevideo.com') || (url.host.endsWith('.lbryplayer.xyz') && (this.$store.getters['prefs/getPreferenceBoolean']('proxyLBRY', true) || headers.Range))
 					) {
 						url.searchParams.set('host', url.host)
 						url.host = proxyHost
@@ -215,8 +218,17 @@ export default {
 				this.destroy()
 				this.$ui = new shaka.ui.Overlay(localPlayer, this.$refs.container, videoEl)
 
+				const overflowMenuButtons = [
+					'quality',
+					'language',
+					'captions',
+					'picture_in_picture',
+					'playback_rate',
+					'airplay'
+				]
+
 				const config = {
-					overflowMenuButtons: ['quality', 'captions', 'picture_in_picture', 'playback_rate'],
+					overflowMenuButtons,
 					seekBarColors: {
 						base: 'rgba(255, 255, 255, 0.3)',
 						buffered: 'rgba(255, 255, 255, 0.54)',
@@ -250,21 +262,31 @@ export default {
 			if (qualityConds) this.$player.configure('abr.enabled', false)
 
 			player.load(uri, 0, mime).then(() => {
+				let bestFitLanguage
+				{
+					const langs = player.getAudioLanguages()
+					bestFitLanguage = LocaleMatcher.match([this.$i18n.locale], langs, 'en')
+					player.selectAudioLanguage(bestFitLanguage)
+				}
+
 				if (qualityConds) {
 					let leastDiff = Number.MAX_VALUE
 					let bestStream = null
 
 					let bestAudio = 0
+					const tracks = player
+						.getVariantTracks()
+						.filter(track => track.language === bestFitLanguage || track.language === 'und')
+
 					// Choose the best audio stream
 					if (quality >= 480) {
-						player.getVariantTracks().forEach(track => {
+						tracks.forEach(track => {
 							const audioBandwidth = track.audioBandwidth
 							if (audioBandwidth > bestAudio) bestAudio = audioBandwidth
 						})
 					}
 
-					player
-						.getVariantTracks()
+					tracks
 						.sort((a, b) => a.bandwidth - b.bandwidth)
 						.forEach(stream => {
 							if (stream.audioBandwidth < bestAudio) return
diff --git a/src/components/Playlist/VideoPlaylistOperationsA.vue b/src/components/Playlist/VideoPlaylistOperationsA.vue
index da03798..5a23f2c 100644
--- a/src/components/Playlist/VideoPlaylistOperationsA.vue
+++ b/src/components/Playlist/VideoPlaylistOperationsA.vue
@@ -44,6 +44,9 @@ export default {
 	},
 	methods: {
 		async loadPlaylists () {
+			if (!this.$store.getters['auth/isCurrentlyAuthenticated']) {
+				return
+			}
 			this.playlistItems = (await this.$store.dispatch('auth/makeRequest', {
 				method: 'GET',
 				path: '/user/playlists'
diff --git a/src/plugins/i18n.js b/src/plugins/i18n.js
index 526e66e..2ae21e1 100644
--- a/src/plugins/i18n.js
+++ b/src/plugins/i18n.js
@@ -1,6 +1,7 @@
 import Vue from 'vue'
 import VueI18n from 'vue-i18n'
 import TimeAgo from 'javascript-time-ago'
+import * as LocaleMatcher from '@formatjs/intl-localematcher'
 
 import store from '@/store'
 import ENTranslations from '@/translations/en.json'
@@ -164,15 +165,7 @@ export async function changeLocale (lang) {
 function initializeLocalLocale () {
 	let lang = window.localStorage.getItem('LOCALE')
 	if (lang == null) {
-		for (const possible of navigator.languages) {
-			if (SUPPORTED_LANGUAGES.includes(possible)) {
-				lang = possible
-				break
-			}
-		}
-		if (lang == null) {
-			lang = 'en'
-		}
+		lang = LocaleMatcher.match(navigator.languages, SUPPORTED_LANGUAGES, 'en')
 	}
 	return changeLocale(lang)
 }
diff --git a/src/tools/DashUtils.js b/src/tools/DashUtils.js
index 471c6cc..e322581 100644
--- a/src/tools/DashUtils.js
+++ b/src/tools/DashUtils.js
@@ -1,11 +1,11 @@
 // Based of https://github.com/GilgusMaximus/yt-dash-manifest-generator/blob/master/src/DashGenerator.js
 
-import xml from 'xml-js'
+import { json2xml } from 'xml-js'
 
 const DashUtils = {
 	generate_dash_file_from_formats (VideoFormats, VideoLength) {
 		const generatedJSON = this.generate_xmljs_json_from_data(VideoFormats, VideoLength)
-		return xml.json2xml(generatedJSON)
+		return json2xml(generatedJSON)
 	},
 	generate_xmljs_json_from_data (VideoFormatArray, VideoLength) {
 		return {
@@ -39,55 +39,69 @@ const DashUtils = {
 	},
 	generate_adaptation_set (VideoFormatArray) {
 		const adaptationSets = []
-		const mimeTypes = []
-		const mimeObjects = [[]]
-		// sort the formats by mime types
+
+		const mimeAudioObjs = []
+
 		VideoFormatArray.forEach(videoFormat => {
 			// the dual formats should not be used
 			if (videoFormat.mimeType.indexOf('video') !== -1 && !videoFormat.videoOnly) {
 				return
 			}
-			// if these properties are not available, then we skip it because we cannot set these properties
-			// if (!(videoFormat.hasOwnProperty('initRange') && videoFormat.hasOwnProperty('indexRange'))) {
-			//   return
-			// }
+
+			const audioTrackId = videoFormat.audioTrackId
 			const mimeType = videoFormat.mimeType
-			const mimeTypeIndex = mimeTypes.indexOf(mimeType)
-			if (mimeTypeIndex > -1) {
-				mimeObjects[mimeTypeIndex].push(videoFormat)
-			} else {
-				mimeTypes.push(mimeType)
-				mimeObjects.push([])
-				mimeObjects[mimeTypes.length - 1].push(videoFormat)
+
+			for (let i = 0; i < mimeAudioObjs.length; i++) {
+				const mimeAudioObj = mimeAudioObjs[i]
+
+				if (mimeAudioObj.audioTrackId === audioTrackId && mimeAudioObj.mimeType === mimeType) {
+					mimeAudioObj.videoFormats.push(videoFormat)
+					return
+				}
 			}
+
+			mimeAudioObjs.push({
+				audioTrackId,
+				mimeType,
+				videoFormats: [videoFormat]
+			})
 		})
-		// for each MimeType generate a new Adaptation set with Representations as sub elements
-		for (let i = 0; i < mimeTypes.length; i++) {
-			let isVideoFormat = false
+
+		mimeAudioObjs.forEach(mimeAudioObj => {
 			const adapSet = {
 				type: 'element',
 				name: 'AdaptationSet',
 				attributes: {
-					id: i,
-					mimeType: mimeTypes[i],
+					id: mimeAudioObj.audioTrackId,
+					lang: mimeAudioObj.audioTrackId?.substr(0, 2),
+					mimeType: mimeAudioObj.mimeType,
 					startWithSAP: '1',
 					subsegmentAlignment: 'true'
 				},
 				elements: []
 			}
-			if (!mimeTypes[i].includes('audio')) {
-				adapSet.attributes.scanType = 'progressive'
+
+			let isVideoFormat = false
+
+			if (mimeAudioObj.mimeType.includes('video')) {
 				isVideoFormat = true
 			}
-			mimeObjects[i].forEach(format => {
+
+			if (isVideoFormat) {
+				adapSet.attributes.scanType = 'progressive'
+			}
+
+			for (let i = 0; i < mimeAudioObj.videoFormats.length; i++) {
+				const videoFormat = mimeAudioObj.videoFormats[i]
 				if (isVideoFormat) {
-					adapSet.elements.push(this.generate_representation_video(format))
+					adapSet.elements.push(this.generate_representation_video(videoFormat))
 				} else {
-					adapSet.elements.push(this.generate_representation_audio(format))
+					adapSet.elements.push(this.generate_representation_audio(videoFormat))
 				}
-			})
+			}
+
 			adaptationSets.push(adapSet)
-		}
+		})
 		return adaptationSets
 	},
 	generate_representation_audio (Format) {
diff --git a/yarn.lock b/yarn.lock
index 22ca31d..f1234ef 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1033,6 +1033,13 @@
   resolved "https://registry.yarnpkg.com/@fontsource/roboto/-/roboto-4.5.8.tgz#56347764786079838faf43f0eeda22dd7328437f"
   integrity sha512-CnD7zLItIzt86q4Sj3kZUiLcBk1dSk81qcqgMGaZe7SQ1P8hFNxhMl5AZthK1zrDM5m74VVhaOpuMGIL4gagaA==
 
+"@formatjs/intl-localematcher@^0.2.31":
+  version "0.2.31"
+  resolved "https://registry.yarnpkg.com/@formatjs/intl-localematcher/-/intl-localematcher-0.2.31.tgz#aada2b1e58211460cedba56889e3c489117eb6eb"
+  integrity sha512-9QTjdSBpQ7wHShZgsNzNig5qT3rCPvmZogS/wXZzKotns5skbXgs0I7J8cuN0PPqXyynvNVuN+iOKhNS2eb+ZA==
+  dependencies:
+    tslib "2.4.0"
+
 "@hapi/hoek@^9.0.0":
   version "9.3.0"
   resolved "https://registry.yarnpkg.com/@hapi/hoek/-/hoek-9.3.0.tgz#8368869dcb735be2e7f5cb7647de78e167a251fb"
@@ -6699,7 +6706,7 @@ tsconfig-paths@^3.14.1:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-tslib@^2.0.3, tslib@^2.1.0:
+tslib@2.4.0, tslib@^2.0.3, tslib@^2.1.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
   integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==