I have a mackie profx8 mixer i use for some analog synths. I set up audio i/o on studio one, and there's a stereo input meter on the mixer that reacts when i play through the mixer, but i cannot get it to output sound through studio one. It seems like it will only select usb ausio from the mixer as an in and out at the same time, so sound will go back through the mixer and not into studio one and out of my monitors. Anyone have suggestions?