Ive just ordered two of these. My computer junk box is getting a little low, plus I was thinking of using it on a jukebox myself.
Biggest problem I see for a juke box would be storage size.
You can get a 4 gig CF card fairly cheap, but Ive seen an 8 gig that was very high, compared to hard drives.
But by using two 4 gigs on the two IDE channels, Im thinking OS and juke box software on one card and the MP3's on the other.
4 gig is about the size of a dvd. That should hold a lot of MP3's.