REsources / Links
Pipedreams - (How a pipe organ works)
Oddmusic - hear organs that make sounds from beer bottles, stalactites, and even the ocean! All kinds of other interesting instruments can be heard here.
Wisconsin Alliance for Composers (WAC) - an extensive dictionary of organ terminology, performance and extended techniques, and compositional assistance for organ writing.
The Pipe Organ and Realtime Digital Signal Processing - written by Andrew Blackburn. An excellent and organized source of techniques and repertoire pertaining to modern and post-modern organ works. There is also a downloadable PDF.