I have had a 4.1 speaker system for quite a while for my computer, but it wasn't until recently that I picked up a 4.1 sound card to fully take advantage. I am looking for an audio player that supports surround sound. Winamp (which has always been my favorite) has plugins that will supposedly do it, but I would prefer a player that would have it native.
Additionally, the sound card came with a media player program that adds reverb, surround sound, etc., however, it does not have nearly the functionality of Winamp or something similar. Any suggestions?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic