Hi demigod!

That processor's built-in GPU is not and probably never will be supported by OS X: that pretty much rules out its use as an HTPC; however, since your motherboard has one PCI-E x16 slot, if your case is big enough, you could add a supported graphics card.

As for installing Mac OS X, here is one guide among many for installing Mac OS X 10.6.8. Since your processor supports SSSE3, it might even run 10.7.X perfectly, although there have not been any reports of the APUs working with OS X 10.7 that I know of.

Good luck!

-instant idiot