Here's a link to the cosm objects for spatial audio and virtual environments that Graham and I presented at Expo74. We've revised things a bit and provided some documentation.
spatial audio objects (ambisonics, doppler shift, distance attentuation)
3D rendering and navigation objects (stereo rendering, quaternion camera movement, collision detection)
Works for Windows/OSX with Max5.
One thing I want to note is that we've packaged a number of the externals into one actual external file. This is quite a change from how Max externals are historically packaged, but since all of the objects share common data, it saved us alot of trouble to do it this way.