i thought about using the html5 audio element. but im not too sure about support between browsers. i know you are tempted you go "WELL INTERNET EXPLORER AND OLD FIREFOX YADA DADA" but i already thought of that!!!
http://img692.imageshack.us/img692/8056/notgoogle.gif
so thats option one. the other two things i thought about were embedding mp3s and manipulating the object with javascript or embedding a very hidden flash applet that plays the music but is controlled using actionscript (or javascript) with the interface ive designed.
but then i ran across this thing. and similar things that are in javascript but are not designed around the audio element.
http://hyper-metrix.com/open-source/jai/
comments?
P.S. that binary lovers track is pretty good.