OS X 10.8 or later. Append the same user-entered text to the beginning or ending of the existing text in the chosen tag (Song Name, Artist, Album Artist, Album, Composer, Comments, Genre, Grouping or Show Name, and their Sort siblings) in each selected track.
Preview each track as it will appear after applying the entered text.
Move selected playlists to a new or existing folder
Display, create text file listing info of dead tracks
Two scripts copy text from the clipboard to current or to selected track's lyrics
Change video kind and video related tags of selected video tracks
Play the selected track and stop
Gather audio tracks whose files contain no artwork metadata