diff --git a/app/build.gradle b/app/build.gradle
index 8b55c1c3..50c5ec4c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -78,7 +78,7 @@ dependencies {
     implementation "com.github.woltapp:blurhash:f41a23cc50"
 
     // Exoplayer
-    implementation 'com.google.android.exoplayer:exoplayer:2.13.3'
+    implementation 'com.google.android.exoplayer:exoplayer:2.12.2'
 
     annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'
     annotationProcessor "androidx.room:room-compiler:2.2.6"
diff --git a/app/src/main/java/com/cappielloantonio/play/service/MultiPlayer.java b/app/src/main/java/com/cappielloantonio/play/service/MultiPlayer.java
index 2b00bc27..4961a0e4 100644
--- a/app/src/main/java/com/cappielloantonio/play/service/MultiPlayer.java
+++ b/app/src/main/java/com/cappielloantonio/play/service/MultiPlayer.java
@@ -80,7 +80,7 @@ public class MultiPlayer implements Playback {
         MediaSourceFactory mediaSourceFactory = new UnknownMediaSourceFactory(buildDataSourceFactory());
         exoPlayer = new SimpleExoPlayer.Builder(context).setMediaSourceFactory(mediaSourceFactory).build();
         // TODO: “Player is accessed on the wrong thread” suppressed
-        exoPlayer.setThrowsWhenUsingWrongThread(false);
+        // exoPlayer.setThrowsWhenUsingWrongThread(false);
 
         exoPlayer.addListener(eventListener);
         exoPlayer.prepare();
diff --git a/app/src/main/java/com/cappielloantonio/play/service/UnknownMediaSourceFactory.kt b/app/src/main/java/com/cappielloantonio/play/service/UnknownMediaSourceFactory.kt
index 7669f5dd..82a5b65f 100644
--- a/app/src/main/java/com/cappielloantonio/play/service/UnknownMediaSourceFactory.kt
+++ b/app/src/main/java/com/cappielloantonio/play/service/UnknownMediaSourceFactory.kt
@@ -2,7 +2,6 @@ package com.cappielloantonio.play.service
 
 import com.google.android.exoplayer2.MediaItem
 import com.google.android.exoplayer2.drm.DrmSessionManager
-import com.google.android.exoplayer2.drm.DrmSessionManagerProvider
 import com.google.android.exoplayer2.extractor.DefaultExtractorsFactory
 import com.google.android.exoplayer2.source.MediaSource
 import com.google.android.exoplayer2.source.MediaSourceFactory
@@ -55,10 +54,6 @@ class UnknownMediaSourceFactory(dataSourceFactory: DataSource.Factory) : MediaSo
         return sourceFactory.createMediaSource(mediaItem)
     }
 
-    override fun setDrmSessionManagerProvider(drmSessionManagerProvider: DrmSessionManagerProvider?): MediaSourceFactory {
-        TODO("Not yet implemented")
-    }
-
     private suspend fun httpGet(url: String?): String? {
         return withContext(Dispatchers.IO) {
             val request = URL(url)