As of version 4, iTunes has a "Replace Existing" option when users are re-importing CD tracks to replace existing tracks. The problem is that iTunes will only allow this option if the ID3 info for the CD tracks and the current iTunes tracks is identical. This script writes the writable info from selected tracks to the info of a CD; when you re-rip, the CD track data is already the way you want it.
Perhaps of Interest...
downloaded 5m 16s ago
Exports and then re-imports selected tracks' artwork
downloaded 12m 2s ago
Copy chosen tag info from one set of tracks to a different set of tracks
downloaded 12m 27s ago
Create two playlists containing tracks with JPEG and PNG artwork
downloaded 17m 19s ago
Export artwork of selected tracks to parent or specified folder
downloaded 20m 55s ago
Displays files in iTunes Media folder not in iTunes track library
downloaded 20m 57s ago
Emulates iTunes search and copies results to a playlist