title: playing system sounds in iOS
body: <p>I am trying to understand how to play those sounds in iOS. I did found a few code snippets but they dont play anything when I use it. What am I doing wrong?</p>
  
  <p><a href="http://iphonedevwiki.net/index.php/AudioServices">http://iphonedevwiki.net/index.php/AudioServices</a></p>
  
  <pre><code>- (IBAction) playSystemSound: (id) sender {
  
      AudioServicesPlaySystemSound (1100);
  }
  </code></pre>