I've just played around with GB in the past, but now I need it to work and I've run into a problem. I have some MIDI tracks but the "Software Instruments" don't include all the regular MIDI ones. It has lots of Pianos, organs and guitars but for brass it just has three generic pop horn voices and I really need a trumpet. Is there maybe a way to use plain old Quicktime MIDI instruments in GarageBand? If not, does anyone know of a free program that can export MIDI to some plain sound format like AIFF or mp3 that I could then open in GB? MIDI Grasshopper requires registration to export and Audacity choked on my files. Many thanks to anyone who can help.