stop = (Button) findViewById(R.id.stop);
        stop.setVisibility(View.INVISIBLE);
        stop.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v)
            {
                mp.stop();
                Log.d("mp", "stopped");
                mp.reset();
                Log.d("mpreset", "ok");
                String filePath = "C:\\Users\\Adir\\AndroidStudioProjects\\ShaharsBday\\app\\src\\main\\res\\raw\\sia.mp3";
                try {
                    mp.setDataSource(filePath);
                    Log.d("mpset", "ok");
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    mp.prepare();
                    Log.d("mp", "prepared");
                } catch (IOException e) {
                    e.printStackTrace();
                }

            }
        });