Check out this video I made that shows you how to use Audacity, a free audio recording program for Mac and PC, so that you can SEE the piano beats, HEAR what they are supposed to sound like when you play the piano, CONFIRM if that is indeed what you are hearing, and MEASURE exactly how fast those beats are. Awesome! I love it!

How to Use Audacity to Help Piano Tuning Students Hear and Measure Beats! from Mark Cerisano on Vimeo.