Free Stdio software
Kristal Audio Engine- Free and Legal download. I have used it for quiet a while now and haven't had any problems once it was setup.
I think its about as simple as you can get for a multi-track setup.
Some Windows type crap, like mixer and soundcard stuff to do with all of them.
Kristal check it out.
There's also free plugins that work with Kristal easily. BlockFish is a beautiful sounding Limiter for Mastering kind of thing for burning CDR's, and others..
if it's not happening in the room, it ain't gonna happen on tape.-HG