The book is out of print, but he has nobly made it freely available from his site, here, in pdf, ms-word, and html.My book, Strange Attractors: Creating Patterns in Chaos (ISBN 1-55851-298-5), describes a simple method for generating an endless succession of beautiful fractal patterns by iterating simple maps and ordinary differential equations with coefficients chosen automatically by the computer. It contains over 350 examples of such patterns. Each pattern produces a corresponding piece of fractal music.
I only found this yesterday, haven't had a chance to dig into it, but it looks like a really good resource, including the code samples, which are also available from his site. The focus isn't on music, but it does seem to touch on it.
Oluf