PDa - Pure Data on the Nokia
 

http://gige.xdv.org/pda/

Wow, it actually works. I've tried it with a few standard PD patches and only got one or two to work but those on the website work fine.

If you don't know what PD is, it's a computer music language similar to Max MSP.

The one big bug I've found is that there's no sound if you close one patch and load another, you have to quit between patches.