title: stop effect in cocos2d?
body: <p>after so much searching , i couldnt find any solution to stopping effect in cocos2d.</p>
  
  <p>my effect is playing a sound that been taken from database, so to stop that particular sound i have to to this :</p>
  
  <pre><code>[[SimpleAudioEngine sharedEngine] stopEffect:[NSString stringWithFormat:@"%@.wav",sound]];
  </code></pre>
  
  <p>BUT i got warning : stopEffect making integer from pointer without cast ..</p>
  
  <p>why is that ?
  how can i stop all the sounds that being playing at once ???  or not a particular one ?  any other way ?</p>
  
  <p>thanks a lot .</p>