iTunes only allows one playlist to be selected at a time. This applet can perform common useful tasks on a multiple selection of playlists: rename (add text, remove text, search and replace text), duplicate, delete, export, merge.
OS X 10.6 or later only.
Tools in the Rename tab operate on the selected playlists' names
Remove iTunes tracks disassociated from files
Locates pairs of track entries pointing to the same file
Create a Ringtone track from a selected track
Convert selected tracks and replace them with converted versions
Droplet/applet adds files, creates playlists based on artist-album or folder name
Change the iTunes "done" chime to a System sound, no sound, or your choice of an AIFF sound file