200e

> One thing I've considered is live air recording in the quad
> environment with a binaural HRTF mic, like this Neumann:


and then there's B-Format

http://www.ambisonic.net/

native B-Format seems easy enough.    compatible with mono and fully  
surround expandable from there.
http://www.radio.uqam.ca/ambisonic/native_b.html

http://en.wikipedia.org/wiki/Ambisonics



OSS is easy, too.
http://www.josephson.com/tn5.html
not mono compatible but a really great stereo image is produced.   
quite similar to binaural  i can throw my diy jecklin rig up and be  
recording in about 4 mins flat

diy disc will cost you about $15.   just add omnis



BRAD