Why are you using 'Stand-Alone Mode' - the Mac should see the 002 as an audio device and you should be able to have your three tracks over Firewire- the faders and controls won't work in Audacity, but you should get three independent audio signals which you can mix together however Audacity mixes them together...
Not sure what your resistance to Pro Tools is though- you qualify for the crossgrade owning the 002 and it really is far superior to the software you are attempting to use.. and you get full compatibility with the 002.
http://imsproav.com/main/AVID99206500200.html
Pro Tools is the single most popular recording software ever created.. *for a reason*