Hi chaps

First post and it has to be a dumb question...

I want to monitor my recorded MIDI tracks without having to arm an audio track and therefore end up recording unwanted audio when overdubbing a standard audio track.

I have a feeling i can do this with an AUX routing, but can anyone walk me through this? DP v2.72 w 2408MkII on G4 450

Many thanks - next post will be much more intelligent I promise!

Paul D