@Gulliver
Have you asked him whether he would be willing to donate the source code to AROS?
I thought the idea was to release the code in the public domain. AROS coders would be as free as anyone else to use the code. See here:
http://eab.abime.net/showthread.php?t=52234"About your request. Yes, I think it is about time to make PFS3
available in the Public Domain. However I must think about the license
to use."