title: How to catch StreamNotFound on a LIVE NetStream?
body: <p>I have an FLEX application where I need to know if the LIVE stream on FMS exists when I do a NetStream.play();
  Example:</p>
  
  <pre><code>var stream = new NetStream(nc);
  stream.play("streamnotexists");
  </code></pre>
  
  <p>How can I pick the error on play how are trying to play a tream that not exists ?</p>