If you don't mind post some details of how you have it designed and how it will operate from a user standpoint.
Have you created it to only copy all the actual MP3 files or are you putting in the ability to back up the database (how about db without the actual mp3 files)? Both are useful, but I do keep a copy on a spare 60GB drive of all my CDs. My biggest concern is probably losing my db after working on getting the sorting and layout just right.
I saw that someone else had also made something, but I didn't see anyone mention if they had ever tried using it to put the data back onto the empeg. This is pretty important, IMO.
Bruno