I/AudioService( 2563): AudioFocus abandonAudioFocus(): removing entry for android.media.AudioManager@2acbae28com.android.music.MediaPlaybackService$3@2acf7c78 E/JavaBinder( 2563): *** Uncaught remote exception! (Exceptions are not yet supported across processes.) E/JavaBinder( 2563): java.util.ConcurrentModificationException E/JavaBinder( 2563): at java.util.AbstractList$SimpleListIterator.next(AbstractList.java:64) E/JavaBinder( 2563): at android.media.AudioService.removeFocusStackEntry(AudioService.java:2214) E/JavaBinder( 2563): at android.media.AudioService.requestAudioFocus(AudioService.java:2331) E/JavaBinder( 2563): at android.media.IAudioService$Stub.onTransact(IAudioService.java:296) E/JavaBinder( 2563): at android.os.Binder.execTransact(Binder.java:320) E/JavaBinder( 2563): at com.android.server.SystemServer.init1(Native Method) E/JavaBinder( 2563): at com.android.server.SystemServer.main(SystemServer.java:730) E/JavaBinder( 2563): at java.lang.reflect.Method.invokeNative(Native Method) E/JavaBinder( 2563): at java.lang.reflect.Method.invoke(Method.java:507) E/JavaBinder( 2563): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) E/JavaBinder( 2563): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) E/JavaBinder( 2563): at dalvik.system.NativeStart.main(Native Method) I/AudioService( 2563): Remote Control registerMediaButtonEventReceiver() for ComponentInfo{com.android.music/com.android.music.MediaButtonIntentReceiver}