title: Removing Play icon in status bar when using AVAudioPlayer
body: <p>I have an iPhone app that plays tracks through an AVPlayer, and separately want button click sounds.  I first used AVAudioPlayer for the clicks and this works fine except I don't want the 'Play' icon in the status bar to appear every time the user clicks a button and the click sample is played.</p>
  
  <p>I turned my attention to System Sounds, which I read has limitations in that you cannot directly set the volume.  However, I am seeing strange volume behaviour which makes me wonder if I can:</p>
  
  <pre><code>NSURL *clickURL = [[NSBundle mainBundle] URLForResource:@"click" withExtension:@"wav"];
  SystemSoundID clickSoundID;
  AudioServicesCreateSystemSoundID((CFURLRef)clickURL, &amp;clickSoundID);    
  AudioServicesPlaySystemSound(clickSoundID);
  </code></pre>
  
  <p>If I click a button before playing a track the volume is set to the phone ringer volume.  However, after playing a track using AVPlayer the volume is set to the player volume (as I would like it to be).</p>
  
  <p>Any ideas how I can make the System Sound sample take on the app volume level regardless of if AVPlayer has been in action first?  Alternatively is there a way to disable play icon notifications in the status bar?</p>