Got wind of this off of Engadget – uses Max/MSP to process the
signals apparently:

http://www.takehitoetani.com/hbbb.html

Check out the video that shows a demo of the software – now if they
only *sync’d* the beat of the music to the heartbeat also, instead of
just tailoring the BPM of the song to the heartbeat… THAT would be
cool!

Dan
—
Dan Nigrin
Defective Records
202 Hack / PC-1600 User / VSTi Host / OMS Convert / Jack OS X
http://www.defectiverecords.com
http://www.jackosx.com