I worked on this for days, and I don't even know why. I will inevitably make my own interface for TouchOSC and use that instead. I only used the first two pages of the Beatmachine interface, but those Knobs and XY Pad and 10 Toggles could be used for anything. I just didn't find a good enough reason to use them with GarageBand. I also didn't feel like programming the multifader on page 2.
I hope whoever downloads this enjoys it and tweaks it to their own needs and creativity. 