Giới Thiệu · BPM Assistant
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.