|Yep, use one of the cables jam listed for "normal" (2 channel) computer audio.|
If your integrated audio or soundcard can bitstream digital audio, you can also purchase a light tube (optical cable) to get 5.1 audio from movies.
The Quad-Pumped Super P3:
Pentium M Dothan @ 2.82GHz (166x17)
3GB PC6400 @ 667MHz
Modified PowerMac G4 Quicksilver case
Homebuilt 1080p projector