Startech.com 4 Chnnl Low Pro PCI Sound Card (PC...

4 Channel Low Profile PCI Sound Card - "The PCISOUND4LP Multi-Channel Dual Profile Sound Card pro... Buy it:
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Diamond XtremeSound 5.1/16 bit Sound Card

Dolby EX and DTS formats 5.1 channel DVD playback 5.1 virtual speaker shifter providing surround ... Buy it:
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Diamond XtremeSound 7.1/24 bit Sound Card

Dolby EX and DTS formats 6.1/7.1 channel DVD playback 7.1 virtual speaker shifter providing surro... Buy it:
$31.99 at Staples