I have been thinking lately about finally cleaning up all the tags for all my MP3's.

But here is the problem:
I had a hard drive crash a while back and lost alot of the files I had on my PC. So I do not have the same files on my Empeg as I do on my PC. This squashes my plans of just fixing the tags for all tracks on my PC and then erasing all the files on the Empeg and re-downloading them to the player with the correct tags. That was my first idea but it is not too feasible.
Anyone have any suggestions about any software that can help me sort through the files on the player and the PC so I don't end up erasing any files that are specific to the plyer only? Or if not software, any ideas on how I should go about retagging?