2iTunes: convert audio tracks while importing (readable droplet) - Mac OS X
droplet to convert audio tracks while importing in iTunes, or convert again tracks using current iTunes import settings

Artist/Album Playlists (readable script) - Mac OS X
create playlists per Artist+Album

Show iTunes Library in Safari

mehTunes v. 1.2
The perfect MP3 iTunes companion.
mehTunes 1.2 is the easiest way to export iTunes playlists to high quality MP3 files, suitable for MP3 CD and non-apple MP3 players.

Save Playlist tracks… (readable script) - Mac OS X
copy file tracks of current playlist

Save selected tracks… (readable script) - Mac OS X
save selected file tracks

Scan for missing files (readable script) - Mac OS X
find tracks whose file is missing

Scan for orphan tracks - Mac OS X
find file in iTunes Music folder but not in Library

Selected tracks info (opensource script) - Mac OS X
number, size and total time for selected tracks

Set enabled… (readable script) - Mac OS 9, Mac OS X
check, uncheck or invert check for selected tracks

Set EQ by genre (Mac OS X)
set EQ preset of selected tracks according to genre