EdealEasy has recently featured the following Sound Cards coupons and deals. These Sound Cards coupons and deals are usually only valid for a short period of time, so that the older coupons and deals may be expired.
Buy.com has the Philips 100W Sound System with iPod Dock (DC912/37) for $99.99 with Free Shipping. It features USB Direct, SD/MMC, FM tuner, iPod Dock and a wireless subwoofer because it's better this way.
Compatibility: iPod mini/iPod nanos to 3G/iPod Classics to 6G/iPod Touch 1G
2.1-channel shelf bar system, wireless active subwoofer
Dock iPod Touch in landscape or portrait orientation
Buy.com has the ASUS XONAR DX 7.1 Channels PCI Express Sound Card for $79.99 - $20 rebate [Exp 10/26] = $59.99 with free shipping. The Xonar DX is capable of delivering 35 times cleaner audio quality with 116dB SNR in comparison to most motherboard onboard audio.