You can find it on amazon.com for 23 us dollars (over 500 pages plus a CD-Rom with examples!!)
There is also a forum & web site for the book at http://www.dancemusicproduction.com
Just wanted to spread the word because this is a great, wonderful, awesome book and information and instruction like this is hard to come by for this musical genre.
Covers Trance, Ambient, Techno, House and others. Teaches Dance Music Theory, sound programming, promoting yourself and much, much more! Volume 2, which picks up where volume 1 left off is coming out next year. And the guy mentioned a possible DVD as well!
