While this tutorial was written for Sony Vegas, it has some info on a great little (FREE) utility you can use to analyze your music and find the number of beats-per-minute (many video editors etc allow you to view the timeline in beats/measures. Check it out
http://www.vegasvideohelp.com/syncing-t ... /#more-301The free utility he references is called MixMeister - run your music through it and it tells you the bpm.
mikey