// establish the connection
private void connectToService() {
    try {
        bindService(new Intent(this, StreamMusic.class), onService, BIND_AUTO_CREATE);
    }
    catch (Exception e) {
        Log.e(APP, "error binding to service.", e);
    }
}

// once connected, set up the interface object
private ServiceConnection onService = new ServiceConnection() {
    public void onServiceConnected(ComponentName className, IBinder iBinder) {
        streamMusic = ((StreamMusic.LocalBinder)iBinder).getService();
    }

    public void onServiceDisconnected(ComponentName className) {
        streamMusic = null;
    }
};