The Philips remote has this under its battery cover:
3139 228 61791
HK01 05328 A 003045
I'm not getting anything from Google from any of that. The remote is supposed to control the computer as well? I hadn't realized that...but I'm not particularly worried about it, because I'd be at the computer anyway when I was using it--and if I weren't, I'd switch the thing back to whatever other input I wanted!
By the way, the stereo is a Philips fw-C577, though it also says FWB-C577/17 (probably a revision.)
So, is there any way for the computer to use both sets of speakers simultaneously? I know how to switch between them in windows, but it seems like there'd be a way to configure multiple outputs, right? (I know that's probably not really winamp-related, but hey, this is the General section.)