Hi, I have a 3rd gen apple tv that has randomly stopped outputting sound. It worked yesterday and has no been touched since, but today no sound. I have tried using home libraries on two different computers and the radio. So it doesn't appear to be the computer stream, but the device itself. I tried turning the device off for a period, switching every sound setting in the menu (dolby on/off, output to 16-bit). I switched the port that the HDMI was connected to as well. No luck. Any help is much appreciated.