It's been a few years. I don't remember what software I used. Audacity perhaps.
You'll need a SPDIF cable, or the yellow cable from an on red/white/yellow VCR cable.
I had recorded at 44.1khz, and meant to release on CD also 44.1khz. Sadly Creative's drivers insist on re-sampling to 48khz and back again. So I uninstalled Creative's drivers, and installed KX project drivers. I swear on all that is holy, never to buy another Creative product, so long as I live. My SB platinum is just a frilly gamers card, marketed as having music production potential.