title: Windows Phone 8 can play WAV file but not MP3
body: <p>On Windows Phone 8, I am able to play  WAV files with the below code, but not MP3 files. Is there anything special I have to do? </p>
  
  <p>My requirement is to play MP3s one after per user's choice, one after another. I play them all one after another on the same xaml Page. The MP3s are included as Content (copy always).</p>
  
  <pre><code>private void PlayAudioTrack(string audiofilename)
  {
      try
      {
          using (var stream = TitleContainer.OpenStream(@"Audio/" + audiofilename))
          {
              var effect = SoundEffect.FromStream(stream);
              FrameworkDispatcher.Update();
              effect.Play();
          }
      }
      catch
      {
         //....
      }             
  }
  </code></pre>