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.
Append beginning of selected tracks' filenames with Artist name
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
Add/replace display artwork to selected iPod/iPhone tracks from corresponding iTunes tracks
Enter text for the selected tracks' Category tag
Remove iTunes tracks disassociated from files
Locates pairs of track entries pointing to the same file