Mp3 decoder implemented in JavaScript

http://www.geek.com/articles/chips/javascript-decoder-lets-mp3s-play-in-firefox-without-flash-20110617/

I think a lot of this came out of a music hack day in Berlin. If you can decode MP3s in JavaScript, you can fingerprint, too. Interesting....

BTW, the jsmad (JavaScript) and libmad (fixed-point C) code that it is based on would be great to learn from.