<< I dont think his receiver has LINE-IN....
SO, I don't know how he would do it then. >>
From the sounds of it he doesn't need a line-in on his reciever, he needs it on his PC, and the Audigy certainly has one.
I run a 600W amplifier off my SB Live! with two ground-standing 350W/ea. towers and its just fine, only problem being the output is so high that I have to keep Winamp/Windows volume setting way low, 50% of either one would be BLASTING it and 50% of each would blow it.
Really wish there was an un-powered line-out on the card.