OS X 10.8 or later. 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.
This update is free for registered users of v4.x.
Select the Action to perform between the two chosen tags in each selected track.
(via in-app purchase)
Perhaps Also of Interest...
downloaded 44m 40s ago
Append user-entered text to beginning or ending of selected tag of each selected track
downloaded 48m 20s ago
Assists with tagging and adding PDF files to iTunes
downloaded 52m 13s ago
Exports your choice of title, artist, album, time, and size of the selected tracks to the clipboard or a text file
downloaded 55m 29s ago
Export album artwork as folder.jpg to Album folder
downloaded 58m 11s ago
Export artwork of selected tracks to parent or specified folder
downloaded 1h 0m 53s ago
Display, create text file listing info of dead tracks