i got tired of having to record one track and then another and then another when i could really do it all in one take, with much better results. i had a couple computers sitting around in various states of disrepair, so i gutted the sound card from one and put it in another. then using my recording software (cool edit pro at the time) i mapped the soundcards to different tracks and viola, it worked. i hit up ebay and found some usb soundcards for about $3 each and bought about 8 of them. using a usb hub, i plugged in 4 of them and attached a couple of different things and i was surprised when it worked much better than i anticipated.
dislcaimer: it would seem these cards are limited to 16-bit recording. that being said, as you can tell from the videos, it still sounds pretty good. while i wouldn't try and start my own recording studio with this technology, for hobbyists, budding musicians, bands strapped for cash putting a demo together, i think this is a much better option than recording single tracks and having to overlay them. thank you all for your interest, keep the comments coming, and i'd love to hear what you can make with this.