[TheTechIsIn]

You could try looking here:

http://www.intelliware.com.au/harddisk/soundcar.htm

or here:

http://www.directron.com/sound---speakers-pci-sound-cards.html

They have what your looking for but as far as comp. and exactly what your looking for I dont know so I just gave the general pages to each of these sites. Let me know if it helps... if not I'll look around some more.