[android-developers] sounpool problem

i am trying to play continuous background music using sound pool

here is my code

private void initSounds() {
soundPool = new SoundPool(4, AudioManager.STREAM_MUSIC, 100);
soundPoolMap = new HashMap<Integer, Integer>();
soundPoolMap.put(SOUND_1, soundPool.load(getBaseContext(),
R.raw.one, 1));
soundPoolMap.put(SOUND_2, soundPool.load(getBaseContext(),
R.raw.two, 1));
soundPoolMap.put(SOUND_3, soundPool.load(getBaseContext(),
R.raw.three, 1));
soundPoolMap.put(SOUND_4, soundPool.load(getBaseContext(),
R.raw.four, 1));
}

public void playSound(int sound, boolean loop) {
int looping = loop ? -1 : 0;
AudioManager mgr = (AudioManager) getBaseContext().getSystemService(
Context.AUDIO_SERVICE);
int streamVolume = mgr.getStreamVolume(AudioManager.STREAM_MUSIC);
soundPool.play(soundPoolMap.get(sound), streamVolume, streamVolume,
1,
looping, 1f);
}

when i do playSound() with 1, 2, 3 sound [wav file] with looping
false, they play fine. but if i call playSound any of the 4 files with
looping true, it does not work.

4th one is an mp3 file which neither plays with looping true nor
looping false.

can i create another mediaplayer object as a member variable and use
it for only background music ?

regards
Jagat

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