Hi there - I'm new, and I' desperate for an answer. I've downloaded a MIDI file that I need to do some work on. Essentially, I need to change the instruments from the standard garageband EXS24 patches to some of my nicer sounding EWQL and NI instruments and patches, but every time I do this it refuses to play back the MIDI notes. The the notes are still there if I open up the piano roll, and if I click on the piano at the side of the roll it does trigger the samples, but if I press play it does not. Things I've tried: 1) Opening event editor and deleting any non-note data. 2) Copying the MIDI data into a new channel If you know how to fix this, or if there's a simple workaround, I'd be SO grateful. Thank you in advance!