MediaPlayer: Couldn't open file on client side; Error(-38,0) and more

I'm learning Android and I've created an activity that has two buttons:A ToggleButton(Play/Pause) and a Button(Next). I have two songs that would like to be cycled upon pressing Next. I have an array `int [] songs={R.raw.song1,R.raw.song2};` I overrode the onClick in my Activity. The first song plays fine; but after pressing Next, I get the following errors: Couldn't open file on client side, trying server side E/MediaPlayer(3107): start called in state 4 E/MediaPlayer(3107): error (-38, 0) E/MediaPlayer(3107): Error (-38,0) E/MediaPlayer(3107): error (1, -2147483648) E/MediaPlayer(3107): Error (1,-2147483648) In onCreate(Bundle...), ``` if(mp!=null) mp.release(); mp=MediaPlayer.create(this, songs[count]); ``` Here's my onClick(View v) method: ``` public void onClick(View view) { Log.v(TAG,"ID:"+view.getId()); switch (view.getId()) { case R.id.playerbutton: //ToggleButton if(state==0) { mp.start(); state=1; } else if(state==1) { state=0; mp.pause(); } break; case R.id.next: //Next button Log.v(TAG,"Next button pressed!"); count=(count+1)%2; //Have only two songs mp.reset(); try { mp.setDataSource(this, Uri.parse("android.resource://com.example.myfirstapp"+songs[count])); mp.setOnPreparedListener(this); mp.prepareAsync(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } mp.start(); break; } } ``` Basically, I'm doing this for every press of the Next button: -reset mp (i.e. the MediaPlayer object) -set a new data source for playing the next song -start mp As for using `setOnPreparedListener` or `prepareAsync`, I read this SO question. Where am I going wrong?