I first encountered his apps at school where we used trials of his "soundconverter" to create ogg vorbis versions of sound effects for a game audio class. His audio file converter which can be found here is spectacular. It has a ton of formats you've probably never even heard of (many of which I've only recently started to use as I get more into editing audio for ringtones). All that and the program batch converts, lets you select sample rates, bit depths and more.
Now audio-geeks, this is the best part: a full license is only $14. If you regularly find yourself needing to convert large quantities of audio files between lots of formats, this is worth the price.
There's also a cool little app he made for messing around with loops (or throwing together some custom music to read/study to) called Mix.
Definitely give it a try as its a tiny download and requires no installation (though its mac only). All you do is open it up and drag some loops into the window. Closer to the venn-diagram looking blue circles means louder, and left-to-right movement pans. Simple.
If you happen to be a mac user and you happen to like messing with loops, then you also need to check out Soundflower, which is made by Cycling '74, (the guys who make Max/MSP).
This little app adds two software "sound cards" to your core audio selections. A two-channel and 16-channel internal audio bus can be used to route audio between applications on your mac. iTunes to Garageband, or Safari to Logic for example. I've used it to route Max/Msp into Logic to record some patches, or even routing iTunes into iChat so my friends could listen to my latest recordings. Really, anything that can choose sound cards recognized by core audio can access these audio buses.
I'll leave what you do with it up to you, but it can do a ton.
Here's a simple idea that should take you half an hour on a mac.
Download Mix and Soundflower. Drop some apple loops from garageband into mix and record what you get going into garageband using soundflower. Instant loop level/pan mixer with minimum of fuss and processor load... sounds like a dance party in the making.
