To be honest i think the Very best thing would be to buy a simple Amplifier, and a harmony remote from logitech or a Kameleon remote for you fashion consious users. However i would think there is a simpler solution. In My lounge i have a complicated setup which i use a Harmony remote and a denon amplifier with a Xbox 360 , HDTV ,DVD Player, 7.1 Speakers , Pc running through it . The Speakers also change the type of surround sound for different setting.
Im thinking that you probably could find an easier way to do this.