that thing looks badass! closest thing to an actual "HTPC" that i've ever seen since the idea was first developed i would be pretty sceptical about the built in audio amplifier appraoch though. i have a hard time seeing some proprietary add-on card that small doing what a true a/v amp or a/v receiver can. i'd definately be using the 7.1 pre-amp and other legitimate a/v hardware. however, i really can see how that would be enough to satisfy a lot of people.
sweeeeeet product, way to go MSI/AMD