I have a mac, and I'm using Logic Pro. I'm trying to record guitar and vocals through a Behringer 1204 going in via USB (UCA200). My computer recognizes the UCA200, however, there is no sound coming into the computer.

There is a Line out feature (RCA). however, when I output it into the the line in port, something comes up. THe Line in works fine (I've connected an ipod and it ran fine). Is there a switch that I'm supposed to push?