This script re-creates a single selected playlist so its View Options (visible columns) are the same as the main Music library (taking advantage of the fact that new playlists acquire the Music library's View Options).
Works only with regular playlists and Smart playlists.
Assign it a keyboard shortcut for ease of use.
Copy Artist to Album Artist of selected tracks
Displays files in iTunes Media folder not in iTunes track library
Perform search-and-replace on text in your choice of tags
Applet assists with swapping, copying, appending data between track tags
Add or subtract a user-entered number from each selected track's Plays
Remove iTunes tracks disassociated from files