title: How to stop MPMusicPlayerController from enabling screen locking
body: <p>I have an application that requires the iPhone screen to remain active (or not, depending on user choice).  I've done this by disabling the application idle timer, which works fine and dandy until I start playing media via the MPMusicPlayerController.  Due to a bug in the SDK, this then reenables the idle timer with no apparent way to disable it again. </p>
  
  <p>My app flow is:</p>
  
  <ol>
  <li>App starts</li>
  <li>Screen stays on</li>
  <li>&lt;...time passes...&gt;</li>
  <li>Play audio file</li>
  <li>Idle timer kicks in</li>
  <li>Screen turns off</li>
  </ol>
  
  <p>I have an empty audio file playing in the background to stop the phone going into deep sleep, but I'd really like to keep the screen unlocked too.  </p>
  
  <p>Has anyone managed to figure out a workaround for this? </p>