You can check around the BBS, others have been able to get it working intermittently in XP. I don't know how, though. Perhaps it's nothing that you can do, it's simply intermittent.

However, I would suggest that doing large music uploads from your work computer is counterproductive, and you should save that task for your home PC. For just twiddling around with your playlists occasionaly, serial from your work PC should be fine.