This script will apply user-entered text to the "Long Description" tag of the selected track(s). This tag contains the text you see in the "Information" panel when you click the circled "i" in the description field. It's also used by podcasters and for display on some iOS devices.
Move selected playlists to a new or existing folder
Remove iTunes tracks disassociated from files
Change case of selected track names to sentence caps
Sort purchased tracks into discrete playlists by name or account ID
Display, create text file listing info of dead tracks
Renumber order of selected tracks