음악 재생이 되게끔 앱개발 하려면

아래 경로를 어떻게 해야하나요

public class MyMusic extends Activity {

        @Override    public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       startButton = (Button) findViewById(R.id.playButton);
       stopButton = (Button) findViewById(R.id.stopButton);
       progressbar = (ProgressBar) findViewById(R.id.ProgressBar01);
       progressbar.setVisibility(8); //GONE

 
    startButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
              progressbar.setVisibility(0); //VISIBLE
              play();                          }         });    
     
    stopButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
              progressbar.setVisibility(8); //GONE
           stop();             }         });    }
   
@Override
    protected void onPause() {
     super.onPause();
     progressbar.setVisibility(8); //GONE
     stop();    }
   
    public  void play( ) {
       stop();
       audio_play = new MediaPlayer();
       try{
        audio_play.setDataSource("C:\Documents and Settings\Android\My Documents\Apps\music.mp3");   // mp3파일 경로
        audio_play.prepare(); // 준비
        audio_play.setLooping(false); // 반복재생 false
        audio_play.start(); // 시작
       }catch(IOException e){
        Toast.makeText(MyMusic.this, "Error!!",
          Toast.LENGTH_SHORT).show();        }    }
        
    public  void stop() {
       if (audio_play != null) {
          audio_play.stop(); // 중지
        audio_play.release(); // 자원 반환
        audio_play = null;       }    }  }