This script will re-embed artwork downloaded from the iTunes Store into the files of the selected tracks.
Also see Re-Embed Artwork.
NOTE: this script cannot handle processing more than about an album's worth of tracks per launch due to the way iTunes manages the graphics data.
Note: (August 2014) Not sure what the issue is but results are inconsistent with modern versions of iTunes.
(Note: In order to launch this PowerPC-era script on an Intel machine, it must first be opened and then saved using AppleScript Editor, which is located in your /Applications/Utilities/ folder. More information is here.)
Use tag data to formulate new file name for selected tracks' files
Batch-reset the Start and Stop Time of selected tracks to their entire duration
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
Assists with finding truncated iTunes Match tracks
Perform search-and-replace on text in your choice of tags
Apply selected CD's CD Text to its disc and track tags