My tags are all screwed up, thanks to id3 limits and AudioCatalyst.

Alternatively, (assuming you still have all your mp3s outside the empeg), you can fix the id3 tags themselves and then upload everything again. I find id3lib perfect for this, due to its bare-bones command-line interface.

Uploading everything from scratch would be slow but works with the current version of the empeg software.

Good luck,
Borislav