Organize music by Beats per minute?

hey
does anyone know a software
that can sort digital music collection into bpm?
it can be very handy for dj and stuff.

Thnx for any help!

Cheers :D

Use BPM DETECTOR PRO. I use it to mix my workout CDs. The interface isn't the easiest at first, but after playing with it, it is so easy a caveman can do it