Add or subtract a user-entered number from the current Skip Count of each selected track. If the Skip count is 0 then its Last Skipped date will be erased (iTunes 8.1 or better).
(Note: In order to launch this PowerPC-era script on an Intel machine, it must first be opened and then saved using AppleScript Editor, which is located in your /Applications/Utilities/ folder. More information is here.)
Convert selected tracks and export the converted files to a new folder
Advance or rewind the currently playing track an entered number of seconds
Create text file listing tracks common to and exclusive to two playlists
Renumber order of selected tracks
Set choice of various number tags of selected tracks incrementally
Add or subtract a user-entered number from each selected track's Plays