Here are some links to the "fredspace" project:
short description + screenshots
pictures for the book
, trying to make it fit in 3-D
-- SGI source code for the basic "fredspace" application
-- SGI source code for the basic "fredspace", plus the
m e l l o w
version (i.e. slower and lower-pitched). I set this up once when I had the flu; it was very soothing watching the tetrahedron slowly drift around.