Audigy OEM, with the firewire port.
digital coax out to a sony reciever.
cheap sony home theater setup from kmart ($300)
75 watts to each channel, 2 front, 2 back, and a center. Then a self-amplified subwoofer.
Just your standard generic home theater setup, the only difference is that I am running it from a computer instead of a dozen different componates.
I use my computer for watching movies and TV and listen to the radio on the reciever or play music thru the computer, so this is my only real stereo setup.