You're missing the point ketchup. It's a turn-key solution and it seems that a remote control is included. I doubt the average Audiogon reader could configure a remote control interface for a PC. Heck even type like you and I who can build PCs in our sleep with either XP, Linux, BSD, etc would be hard-pressed to configure a remote control interface intuitive enough for the average user.
Are you aware of such software packages? If so, I'd like to know. Because my brother just dumped a bunch of PC parts on me and said "Build me an MP3 server." I think he's looking for a way to control it with his Dell Axiom handheld PC. In such a way that he can queue up song titles or play lists from the screen on the handheld, and also get a readout on the handheld of what is currently playing. Quite a tall order in deed. But in the meantime I would settle for a remote control that is similar to the one your get with most satellite TV receivers with an interface similar to their program guide. Any ideas? Or just check the usual PAMS or HTPC newsgroups?