OS X 10.8 or later only. This applet plays each track in the selected iTunes playlist for a set time interval optionally starting at a set number of seconds into each track, beginning with the selected track. Handy for 'scoping playlists.
Settings are saved between launches.
Export album artwork as folder.jpg to Album folder
Add or subtract a user-entered number from each selected track's Plays
Change case of selected track names to sentence caps
Append user-entered text to beginning or ending of selected tag of each selected track
Exports and then re-imports selected tracks' artwork
Displays files in iTunes Media folder not in iTunes track library