I have a Simplifi Audio 5.1 Amplifier that is designed for use with a Media Center PC. It is barely used. I am switching to SageTV with extenders, and unfortunately, this will not work. The unit has 6 inputs and the volume is controlled by the Media Center PC. The unit turns on and off with the PC (will detect sleep mode as well).
http://www.simplifidigital.com/shopsimplifi/51-analog-input-media-center-amplifier-black-p-4.html
It sells for $299.00 new. I will take $150 or best offer.