<a href="
http://www.digidesign.com/ptfree/" target="_blank">Digidesign ProTools Free</a>
This is a free version of the industry standard recording software. If you need to track audio or do light-weight midi, hands down the best software to use. They actually pack alot of stuff into the free version. Same UI and tools for the most part, 16-24 bit recording, 8 tracks of audio, and a handful of useful plugins.
So you can actually still stick with PT Free if it fits your needs of you can move up to Mbox, which is a USB box that carries in 2 channels of audio

, Digi001 which is a PCI card and a I/O box (great system),

and the brand new Digi002 which is firewire system and is a control surface as well.

All these systems are powered by ProTools LE which currently only runs in OS 9 (no classic, must boot in 9) but will run natively in X by this fall. There are programs like Logic and Cubase, but you absolutely cant go wrong with a protools system.
Enjoy!
[ 08-08-2002: Message edited by: Miami Craig ]</p>