As creators of the Koan Generative Music System, we are very happy to reveal that we now own it again through Intermorphic.
This forum is now closing, therefore, and we direct you instead to the Noatikl forum. Noatikl is our successor to Koan, and works in broadly the same way. If you knew Koan, then you will get to grips with Noatikl very quickly.
NB: Noatikl can import Koan pieces (exported to text files), and then play them.
Thanks!
Tim & Pete