I'd love to try the real-time version of C-sound for Windows too.  Though I
would love to learn more about CSound I'm not much of a math guy, alot of
working with CSound seems like doing algebra instead of composing music, so
anything that is a little more intuitive like a full GUI would be great. 
Might actually be able to compose something with it.
By the way, what is going to happen to CSound with real-time tools like
Reality Software Synth (www.seersystems.com) and others like it coming out?
 Seems like perhaps CSound has stayed too acedemic to be appreciated by
more musicians and may fall by the wayside even though its free.