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.
Remove iTunes tracks disassociated from files
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
Sort purchased tracks into discrete playlists by name or account ID
Droplet converts movies to H.264 and adds to iTunes
Change file type to make selected AACs bookmarkable
Display, create text file listing info of dead tracks