I don't know if there's an easy way but because there are no other suggestions:
Maybe you should find and cut a single bar of music from that wav and then slice or analyze with some software. Is the beat slicer in Fruity loops
able to do this? Or some Cool Edit / Audacity tools?
The other way is to bring your wave to Sonar or some other sequencer. Put a midi drum track there beside it. Listen and keep changing the tempo 'til they match.
As you can see, I don't know an easy way but I could get the job done if I had to. Hope this helps!