I'm building a gaming system that will also serve as a poor man's home entertainment center PC. It's based on the Asus P8Z77-V, which has legacy PCI slots. I have a Xi-Fi XtremeMusic PCI card I could install instead of using the onboard sound. It's a 2 - 3 year old card, so I'm skeptical that it would really add much, but there are Windows 7 drivers available. I'll be using a basic 2.1 stereo speaker setup. Opinions?