midi is just like a "yo i am here son holla" and the audio cables send the sound...i have the 3/4 cables connected from audio out on mpc and input 7 and 8 on digi 002 and output 2/r, 1/l/mono from korg trynity to digi input 5 and 6.....the korg trynity when i play it in a midi track in protools...