Using M-Audio Quattro USB interface.
I played a few cycles of the 12 bar bass through the Trace Elliot and then into the Quattro and into my eMac and used Garage Band ( the basic Apple Mac music editing software) to record this and then covert it to an MP3 and listen in iTunes. So this Quattro interface will work with Mac OS X 10.4 and will use Garage Band. Now I might buy a used iBook that can run Mac OS X 10.4 and use this on top of our Roto Rack 10 U wheeled rack.