I am running the second PC in my sig as an HTPC hooked up to my 46" Aquos. I do like mine to be silent because i'm not watching TV all the time. One thing I noticed hooking up my receiver was that I had to use DVI -> HDMI for video and an optical cable for audio in order to get more then 2 channel (stereo) audio. Maybe it's my Gigabyte 780g board's fault, I didn't look into it too much. Happy building!
