Over the weekend I was trying to watch a UStream feed of a college hockey championship. The video was fine, but there was no sound. The same feed worked fine audio and video on a MacBook Pro, iPad2 and Windows 7 laptop. Then I tested it on another Android device, a Google Nexus 7 tablet and again it played successfully. This problem occurred on both weekend days. Any idea how the GoogleTV / Vizio Co-star could have had this difficulty with the UStream feed? Usually if it was an internet issue the video would be the first to go, not the audio.