BPM Assistant is a utility for Mac OS X 10.4+ that allows DJ's to calculate the BPM (beats per minute) of tracks and to locate harmonically compatible tracks when the key of a track is known. This tool is a freebie and no technical support or warranty is offered.For anyone interested in building Cocoa applications on Mac OS X, I've made the source code for BPM Assistant available here.
Mac OS X 10.4 Intel
Mac OS X 10.4 PPC
||Mac OS X 10.4 or higherUniversal Binary