With my recent move to Virginia, the server hosting my old homepage died . Hence, until my new homepage is up, here are the URLs to what I believe are the two latest versions of the software (there may be one even newer one which has had some adaptations to the 3rd party library which refused to compile under latest Fedora, so if you are encountering similar problems with this tarball, please then try the Planet CCRMA's source package/RPM (http://171.64.197.141/planetccrma/software/soundapps.html#SECTION000529100000000 000000).
 
Here are the locally hosted tarballs:
 
http://ico.music.vt.edu/Linux/RTMix/rtmix-0.75.tar.gz (4MB source)
http://ico.music.vt.edu/Linux/RTMix/RTMix-sounds.zip (11.5MB demo sounds needed for the "Simon-like" game tutorial)