Just found this on digg.
Really cool! You sepcify a note on a keyboard corresponding to each of the 10 decimal digits. Then it will use the digits of pi to create a sequence of notes and play it. Sounds really cool if you use different scales or raags.
Try using pentatonic raags, then you can span two octaves. Or hexatonic or heptatonic raags, and repeating only the vaadi or samvaadi notes on the next octave.
Really cool what pi can do!!