I'm trying to run RockboxUtility on my Mac, and when I open it, it immediately crashes. I checked the console, and It's looking for libusb-0.1.4.dylib in usr/local/lib/, which isn't there. Where can I get libusb? I went to the sourceforge page for it, and all that was there was a linux repository and the source, which wouldn't compile, and I'm not even sure if it's what I need. Help!