Greetings Mac-a-teers, this seems like a wonderfull forum so hear we go. I recently 4 months ago, started doing sound for our Church we have a Mackie SR24.4 board yes old. All I record now is the sermon but I'm dying to start recording our music and want to use Garage Band to help me make it come alive. I just recieved my Onyx Blackjack USB interface. with 2 inputs. I know now I should have gone with firewire but for now this is what I have. Finally my question. The Garage Band instuctions say it is possible to record from my board. What output from my board do I need to use to go to the input of my interface which has 2 inputs that can except XLR or 1/4TRS. Avalible outs from Board as I can see would be, 1 of 2 Head phone jacks, L & R control room out which is what I'm now using ran to a CD recorder, I have 6 Aux sends using 2 for stage monitors, and 4 sub out.