| br>Yay. Ok so I'm managing to get something useful out of M4L. Although there seems to be come cross over bleed going on from channels on the 8CV.
Anyway I solved it by creating a M4L "instrument". So this should be able to take midi. It outputs audio to the plugout~ object. Which I then redirect to the ES4 controller via ableton's internal routing.
Hopefully I'll be able to build some decent tools with now.