title: How to stop a playing sound using AudioServicesPlaySystemSound in ios7?
body: <p>I am playing the custom sound in my application using AudioServicesPlaySystemSound,how can i stop the sound immediately when i touch any button.
  currently i am using the below code to stop the sound but its not work well</p>
  
  <pre><code>SystemSoundID soundID;
  AudioServicesRemoveSystemSoundCompletion (soundID);
  AudioServicesDisposeSystemSoundID(soundID); 
  </code></pre>