at least some sources have been released, it has been discussed here:
http://eab.abime.net/showthread.php?t=89055
and the sorces are here
https://zapek.com/software/voyager/
you wont be able to do much with them i fear.
i have started working on it compiling it for aros (still have source here) and similarly like with ambient, there are a lot of missing dependencies. i have communicated with zapek about this and they are lost. perhaps someone could replace missing bits. but considering the amount of alternatives to work on i gave up upon this.