The Virginia Center for Computer Music currently provides many levels of support for RTcmix development.
http://www.virginia.edu/~music/VaCenterCompMusic.html
The McIntire Department of Music, at the University of Virginia, offers several courses of instruction in computer music and composition. Their new PhD program offers a unique opportunity to focus on these areas.
http://www.virginia.edu/~music
The Princeton SoundKitchen has some documentation on MINC commands and Cmix structure:
http://www.music.princeton.edu/winham/cmix.html
The Computer Music Center at Columbia University has some excellent documentation and example scores:
http://www.music.columbia.edu/cmix/
John Gibson also has some nice pages with example scores:
http://www.people.virginia.edu/~jgg9c/musi540/index.html
Sample scores and additional RTcmix information can be found at:
http://presto.music.virginia.edu/RTcmix/
The College-Conservatory of Music Center for Computer Music at the University of Cincinnati, (ccm)2, has continued development on various RTcmix interfaces:
http://meowing.ccm.uc.edu/
The OSS audio drivers can be found at:
http://www.opensound.com/.
Information on the RME Digi96 series of digital audio cards:
http://www.rme-audio.com
The ICMC and SEAMUS web pages can be found respectively at:
http://www.computermusic.org
and
http://seamus.lsu.edu/.