The binary and the source code is primarily licensed under cc-by-nc-nd 3.0.

http://creativecommons.org/licenses/by-nc-nd/3.0/

Here is what it stands for:

cc - Creative Commons
by - If you share this, provide the original authors name
nc - You may use this only for non-commercial projects
nd - Don't alter and re-distribute.

Some additional notes:

(nc) A commercial usage will need a separate handshake. Military projects will not succeed.
(nd) If there are bugs, report them or report a bug fix, then it will be
fixed in the original software, not only in your derivate. Same with new features and improvements.