Share audio and video streams and files
Use ChromeTM to share audio and video.
Share video from sites like YouTubeTM. Or, open video and audio files you have on your desktop in a new Chrome tab to share them. 
  1. From a Chrome browser, open the Collaborate panel and select the Share Content tab.
  2. Select Share Application/Screen.
  3. Select the Chrome Tab option.
If you are on Windows, you can also select Entire Screen.
  1. Select the Share audio check box.
  2. Choose the tab you want to share from the list.
  3. Select Share.