I have Audacity on my laptop, and a behringer (henyx1204fx) 8 track mixer, and currently I have one of the "Aux" outputs of the mixer going into my laptop's microphone line-in. The mixer is recognizing my microphone, but my laptop isn't recognizing my mixer, so it kind of puts a damper on the recording process. haha

Should I be using my computer's USB instead of the microphone line-in?
Is there any apparent reason why my computer wont recognize my mixer?

Thanks in advance!!!
Main rig:
ESP Horizon FR-II
ENGL Invader 150
Mesa Traditional cab w/ v30's
ISP Decimator Pro Rack G
BBE Sonic Maximizer 482i

Back up rig:
ESP Eclipse STBC
LTD EC-1000 VB
Framus Cobra modded