Change the case of the selected iTunes track names to "sentence case": all lowercase with the initial letter uppercase. For example, "L'effet Que Tu Me Fais" could become "L'effet que tu me fais", and "Comme D'Habitude" becomes "Comme d'habitude". This is customary in many languages.
(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.)
Paste non-ID3 Tag track and file related info into Category, Comments, or Description tag
Copy chosen tag info from one set of tracks to a different set of tracks
Remove iTunes tracks disassociated from files
Assists with finding truncated iTunes Match tracks
Add/replace display artwork to selected iPod/iPhone tracks from corresponding iTunes tracks
Use tag info from selected track to search Amazon Books for cover art