I created this project on a persistent whim after a friend generated a sound file of himself reciting pi and calculated the size of a million digits recital to be rather large.
It's simple to add your own voice to the site! You will immediately be given a link that plays the recital in just your voice which you can share with your friends.
Contributed samples go in the "Unmoderated" list and are not shown by default or randomly selected for the front page until they have been reviewed by site staff for accuracy.
The default visualization on the main page is a rendering of what I'm calling the pi-cat fractal, an original discovery shown to me by ap0calypse from Freenode IRC (and used with permission). When drawn to 1 million digits, the algorightm takes on the appearance of a cat.