Hi folks. I have been trying to set up the single track workflow for an external synth in order to record midi AND audio quite a while according to Gregs excellent tutorial (). I'm always failing at the crucial point where he is assiging the audio input by clicking the "right arrow button" in the external instruments section in the mixer. I don't have that button!! Pls see the screenshot. Driving me nuts. What could I possibly have done wrong? OR is this a feature of the Pro-version? HELP