fix with dirty hack: ryanheise#650 (comment)

Author: CapmartinLeo

just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java

@@ -144,6 +144,7 @@ public AudioPlayer(final Context applicationContext, final BinaryMessenger messe
         dataEventChannel = new BetterEventChannel(messenger, "com.ryanheise.just_audio.data." + id);
         processingState = ProcessingState.none;
         extractorsFactory.setConstantBitrateSeekingEnabled(true);
+        extractorsFactory.setMp3ExtractorFlags(com.google.android.exoplayer2.extractor.mp3.Mp3Extractor.FLAG_ENABLE_INDEX_SEEKING);
         if (audioLoadConfiguration != null) {
             Map<?, ?> loadControlMap = (Map<?, ?>)audioLoadConfiguration.get("androidLoadControl");
             if (loadControlMap != null) {