See:
Proceeds of the International Academy of Electro-Acoustic Music, Bourges,
Volume III (1998). Editions MNEMOSYNE. 380+ pages (both in French and
English, so about 175 are in English). Price 120 Francs. 
Here's the email: agmeb10@calvacom.fr
I could also type the street address/fax number etc if someone 
wants it.

The volume contains 20 short articles by a whole gang of EAM composers, 
including F Barrière, C Clozièr, Max Matthews, J-C Risset, Curtis Roads, 
Barry Truax. At least half of the articles seem to concern diffusion in 
the sense Pete asked about, some are about distribution of music, some 
about other topics (eg reception of MIDI in the electro-acoustic music world).

Vol I in the series is about general composition aesthetics, and 
Vol II is about electronic music analysis (a CD with examples included). 
Prices 80/140 Francs.

All articles are written in plain style, and most of those I've looked 
at contain good tips on thinking about electronic music, practical studio 
work etc.


Regards,

        re