title: Desktop Audio Capture Not working for chrome app
body: <p>According to <a href="https://code.google.com/p/chromium/issues/detail?id=223639" rel="nofollow">https://code.google.com/p/chromium/issues/detail?id=223639</a> chromium  has issues with audio Loopback. and it never works in chrome app. Can anyone share some links and explanation to why is this not working?Or if it is possible? I tried below code but lot of disturbance in desktop audio. </p>
  
  <pre><code>video: {
    mandatory: {                
        chromeMediaSource:'screen',
        chromeMediaSourceId: id
    }
  },
  audio: {
    mandatory: {
      chromeMediaSource: 'system',
      chromeMediaSourceId: id, 
    }
  }
  </code></pre>
  
  <p>Multiple streams are captured and attached to a single peer connection?</p>
  
  <p>Thanks!</p>