I recently bought a panny plasma. I made several mistakes hooking it up to my cable and surround sound system. One time I hooked it up, I was able to listen to sound when the TV was turned off. I am not sure how I did it, but I'd like that option again, esp since I have the revue. I'd like to be able to listen to audio from revue and/or cable with the TV turned off. Is that possible? Some of the stuff I'd like to only listen to as I understand plasmas (and most tech nowadays) have a limited shelf life when powered. I have an optical switch and of course using HDMI for revue. Is this possible?