Hai,
So this is my setup.
On my late 2014 Mac, I have Logic Pro X connected to a Novation Impulse and a Focusrite Saffire Pro 24 DSP hooked to the monitors.
On my PC, I open Cubase 5 which sends audio to the Focusrite via SPDIF out on a M Audio Delta 2496 and receives MIDI IN from Saffire Pro...