Why won't this Java Android SHOUTcast MediaPlayer app code work?

    String url = "http://91.121.140.11:8000/";
    MediaPlayer mediaPlayer = new MediaPlayer();
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
    mediaPlayer.setDataSource(url);
    mediaPlayer.prepare();
    mediaPlayer.start();

I am using Android 4.0.3 to test this and have tried it on a physical device and the emulator. The app opens but I cannot hear anything. I thought they added support for SHOUTcast streams. Have I done something wrong?

MediaPlayer mp;
@Override
public void onCreate(){
mp = new MediaPlayer();
mp.setOnPreparedListener(this);
}
public void prepareplayer(){
mp.setDataSource(Url);
mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
Log.d(TAG, "Preparing..");
mp.prepareAsync();
}

@Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
Log.d(TAG, "Prepared");
mp.play();
}