This applet will assist with swapping, copying, and appending data between two user-chosen tags in selected tracks or tracks in the selected playlist:
Swap - swap data between tags, ex: ARTIST<->COMPOSER
Copy - copy data from one to another tag, ex: ARTIST->
Append - append data from one tag to the end of another, ex: ARTIST->COMPOSER - ARTIST
Prepend - prepend data from one tag to the beginning of another, ex: ARTIST->ARTIST - COMPOSER
The latter three actions also provide an option to delete the info from the first tag after the copy. Read Me explains all.
For OS X 10.6 or later only. Previous universal version comprised of four separate scripts is available via direct download in the "Info" section below.
Select the Action to perform between the two chosen tags in each selected track.
Applet assists with swapping, copying, appending data between track tags
Perform various tasks on a selection of playlists; rename, delete, duplicate, merge, more
Update subscriptions which have expired by virtue of being ignored for five or more days
Remove iTunes tracks disassociated from files
Open the iTunes Media folder in the Finder
Display, create text file listing info of dead tracks