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.
Continuously update your desktop picture to current track's artwork
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
Copy multiple playlists from iTunes to iPod
Change the settings of hidden iTunes preferences
Displays files in iTunes Media folder not in iTunes track library
Perform search-and-replace on text in your choice of tags