I've been using Logic Express 9 for quite a while as an audio recorder , now I'm trying to use Superior Drummer to add drum tracks. I can link SD to a Software instrument track and play a groove and listen to it , the input and output meters show response , as does the track level meter , but nothing is recorded. Not even a blue track with a straight line. I suspect theres some simple reason for this but I'm baffled. It's the same using the internal soundcard or my Line 6 box. I will post a screenshot.