Hey all, Unbeknownst to me, the new MacBook pros don't have a line in for audio anymore, so I need to get some sort of interface to connect my XENYX 1002B mixer to my MacBook Pro. Basically I'll be using this to record guitar and vocals (sometimes simultaneously). The other equipment I use is a Marshall Combo amp for my Black Beauty, an SM57 on the combo, and a really old Pro Audio vocal microphone. I'd prefer a Firewire connection over USB, but I'm not familiar with the pros cons of Interfaces in the $100-$250 range ideally below $150. Any suggestions?