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
Applet assists with swapping, copying, appending data between track tags
Capitalize the first letter of each word in selected track names
Remove iTunes tracks disassociated from files
Juxtapose text in Artist tag such that "Ellington, Duke" becomes "Duke Ellington"
Display, create text file listing info of dead tracks
Displays files in iTunes Media folder not in iTunes track library