title: AVAudioPlayer with external URL to *.m4p
body: <p>My Problem is the following. I got this code and i guess a corrupt NSURL since the AVAudioPlayer is nil after initializing:</p>
  
  <pre><code>NSString *dummyURLString = @"http://a825.phobos.apple.com/us/r2000/005/Music/d8/a8/d2/mzi.jelhjoev.aac.p.m4p";
  NSError *error;
  NSURL *url = [NSURL URLWithString:dummyURLString]; 
  AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&amp;error];
  [player play];
  </code></pre>
  
  <p>Any suggestions what is going wrong here? </p>
  
  <p>The &amp;error shows this:</p>
  
  <pre><code>Error Domain=NSOSStatusErrorDomain Code=-43 "Operation could not be completed. (OSStatus error -43.)"
  </code></pre>