Is there a way to get the HD audio formats from a htpc?

Do they make a card that outputs HD video and sound through HDMI in a single output?

I imagine the hardware requirements for blue ray playback are preety steep although pc parts are pretty cheap these days.

M80,VP150,QS8,ERD-1,XPA-2,XPA-5,UMC-10,PS3,XBOX360,Dish VIP622,PB13 Ultra,Panasonic PT-AE3000U