iTunes Associator 1.6 (by Josiah Pugh)
iTunes Associator changes the file type creator of MP3s to iTune MP3s.

iTunes Associator 1.6 (by Josiah Pugh)
iTunes Associator changes the file type creator of MP3s to iTune MP3s.

iTunes-O-Mat 1.0 (by Martin Michel)
Changes the file and creator type of files to associate them to iTunes.

Sing that iTune in iTunes! 1.1 (by Fabrizio Costantini)
"Sing that iTune!" is a very nice widget that automatically downloads the lyrics of the track you are listening at in iTunes.

Randomly Open iTunes 1.0 (by Erik J. Barzeski)
Randomly Open iTunes is an AppleScript that only launches files whose type is iTunes ("hook") so if you have a folder of MP3s for other applications, you'll have more work to do.

CD Manager 0.1 (by Kris Gybels)
CD Manager helps you keep your iTunes library clean by managing MP3s that are on regular data CDs.

Hubi`s iTunes Scripts 1.8 (by Hubi)

File Type to iTunes 1.0 (by Erik J. Barzeski)
File Type to iTunes is a very simple AppleScript droplet that steps through a bunch of files and changes their file type and creator code to that of an iTunes MP3.

CD Stack 1.0.2 (by Kapraet Software)
CD Stack allows you to rip your CDs with control that you may not be used to on a Mac.

File Sleuth 1.02 (by Koingo Software)
Managing files with the Finder in Mac OS X can only take you so far.

Sing that iTune! 3.0 (by Toru Yano)
A lyric fetcher widget for iTunes which can also handle radio streaming titles.

SlimServer 6.5.0 (by Slim Devices, Inc.)
Slim Devices introduces SlimServer 6.

NoteAbilityPro 2.319 (by Keith Hamel)
NoteAbility Pro is a professional music notation package for the Macintosh OS-X operating system.

netTunes 2.3.1 (by Shirt Pocket)
netTunes lets you control iTunes running on one Macintosh from another, using iTunes' native interface.

v.m.k 1.6 (by Fredrik Olofsson Musikproduktion)
This application lets you simulate a midi keyboard on your computer keyboard.

Audio Hijack 2.2.5 (by Rogue Amoeba)
Audio Hijack gives all your audio that extra bit of sweetness.