title: Play two mp3 song at the same time
body: <p>I want to play two song (mp3) at the same time (one is karaoke file and one is the record  audio by user). Can I use the MediaPlayer to do this? If so, is that right if I create 2 object of MediaPlayer and setDataSource for two file and play it?</p>
  
  <p>Thanks!</p>