Hi,
It is great for something so simple, once the code has been tidied up a bit there would be a good case for including it in the Arduino samples it knocks the socks off blinking an LED or playing a tune with the tone library and is a pretty simple circuit to build with huge potential for people to build on.
If your using the original illutron code, PM me your email address and I will send you the IllutronB code I used for the video, it allows you to change the pitch of the one channel and control the speed of the sequence, it also drives the four LEDs and is based on the first cut at refactoring and optimizing the library.
I need to have another run through the library there are still one or two floating point calculations that I want to replace with integer maths but these will be minor changes, the basic structure and interface to the code is likely to stay more or less the same.
I have sent the library to quite a few people now so hope to see some cool projects posted and if anyone can make some demo sequences or drum tracks I am happy to include them in the examples with library.
Duane B