bb5.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View arg0){

        if (mp.isPlaying()){
            mp.stop();
        }

    } // END onClick()
});

protected void managerOfSound() {
    int size = tempq.size();
    for (int i = 0; i < tempq.size(); i++) {
        String u =tempq.get(i);

        //WHOLE
        if (u.equals("a4")){
            mp = MediaPlayer.create(this, R.raw.a4);
            mp.start();
            try {
                Thread.sleep(2000);
            } catch (InterruptedException ie) {
                // TODO Auto-generated catch block

            }

        }else if (u.equals("b4")){
            mp = MediaPlayer.create(this, R.raw.b4);
            mp.start();
            try {
                Thread.sleep(2000);
            } catch (InterruptedException ie) {
                // TODO Auto-generated catch block

            }

        }else if (u.equals("c4")){
            mp = MediaPlayer.create(this, R.raw.c4);
            mp.start();
            try {
                Thread.sleep(2000);
            } catch (InterruptedException ie) {
                // TODO Auto-generated catch block

            }