title: Playing audio using kAudioUnitSubType_AudioFilePlayer
body: <p>I successfully implemented an audio file player using the remote I/O audio unit and a render callback where I use ExtAudioFileRead to render audio frames.</p>
  
  <p>At this moment I was just wondering what the difference would be of using kAudioUnitSubType_AudioFilePlayer instead of a render callback with ExtAudioFileRead. What would be the advantage of this approach?</p>
  
  <p>From the apple documentation I cannot deduct the differences. </p>