Hi everyone ! Found this snipped of code online http://www.math.harvard.edu/archive/21b_fall_04/exhibits/soundmix/index.html
a=Import["scherzo.wav"];
type=a[[1,2]]; n=Length[a[[1,1,1]]];
It is stereo file, what is the function of a[[1,2]] and a[[1,1,1]] ?