Mirad lo que me he “encontrado”
BPM Counter - Beats per minute
http://img502.imageshack.us/img502/1300/dscf6354dm5.jpg
http://img502.imageshack.us/img502/7346/dscf6344fz5.jpg
http://img22.imageshack.us/img22/3296/dscf6346ov5.jpg
http://img22.imageshack.us/img22/1989/dscf6361fe6.jpg
http://img22.imageshack.us/img22/7885/dscf6358pn0.jpg
por un experto - 50 Gs