Open source DJing app - I've not tried it, but it looks okay.

A little helper app for iTunes.

"The new paradigm of computer audio can be summed up in two words: "real-time" and "modular" – both of which are embodied by one application..."

"SoundOfAnImage converts images into music. Sometimes the "music" even sounds like music, especially if you play images with a lot of structure and/or symmetry to them"

Cover art browser for iTunes, rather spiffy.

What number of people a) have an iSight and b) have tastes so pedestrian that all their stuff is available at Amazon?

Finds silence in MP3 files, and lets you split it into smaller files - handy for ripping LPs and 12"s

Ripping and conversion utility. Looks great, but I'm not sure it's worth spending $19.95 to do what can already be done with various freeware/open source applications.