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.
Set the Plays of selected tracks.
Rename selected tracks' Song Names with their filenames (minus extension)
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
Download selected media from a web page in Safari
Display, create text file listing info of dead tracks
Set choice of various number tags of selected tracks incrementally