Speaking of the Creative mixer; Not having the original install disk anymore, I went searching for an updated version of the mixer, and found one that seemed to install ok. However, when I try to open it, I get a dialog that says it can't see my card in/out ports. So, I have to rely on the windows mixer that gives me two output options: to speakers or digital. I'm guessing that the speaker outs are line level, since the speakers are typical powered ones (amp contained in the subwoofer). I have tried the line outs, and there's no signal there, probably because those haven't been enabled (catch 22)
Another option, one that was successful years ago, was to record to VCR. The sound quality was more than adequate for what I do.