This code accepts a URL to an MP3 file and a frameRate and outputs an XML list of Average Volume and Peak Volume by video frame as a floating point value between 0 and 1, with 0 being silence and 1 being full loudness.
404 Not Found - Could not find the mp3 file at that URL. (http://mp3cruncher.org/examples/Goldfrapp_Crystalline-Green.mp3)