title: MediaPlayer -- how to separate a narration track?
body: <p>I'm working on an android app that plays video (using video view).  the video is meant to have both music (left and right) and narration, but I want to selectively be able to turn off the narration track in the MediaPlayer.</p>
  
  <p>Is the way to do this correctly to encode by mp4 video file with 3 audio tracks (right left and narration) and then turn off the naration audio track with deselectTrack()?</p>
  
  <p>Not clear to me from the documentation that MediaPlayer can handle more than 2 audio tracks.  </p>
  
  <p>If the audio tracks are limited to 2, would it make sense to run two media player simultaneously (synching them up with seekTo())when I want the narration track to play?</p>
  
  <p>Thanks.</p>