OK, this is not only one of the most extreme time wasters on the web, but (if you follow it through to completion) a serious test of endurance...Someone far geekier than you could ever hope to be has written a Flash app that lets you select notes for each of the digits from 0 to 9, then uses these as the basis for a musical rendition of the first 10,000 digits of pi... By my (highly inaccurate) calculations, that's close to 2 hours of random crap synth tones... You have been warned.