Hi,
The GPL license allows to make modifications of the souce code and charge a fee for the physical act of redistributing it, but with many conditions, the most important one is that you have to redistribute all the source code of your app, and that anyone can redistribute it for free.
So there are 3 situations:
a) You want to modify Glest source code, redistibute it charging a fee, and you don't care if you have to include the source (our code and your modifications) and allow free redistribution of your modification.
You can do that right now, using the Glest source code currently available.
b) You want to make a mod of the game without modifying the source code and charge a fee for it.
You can do it right now, you just have to include in separate packages our game and your mod, and tell people to install our game and then apply your mod.
c) You want to modify Glest source code and make a proprietary application based on it.
You can't without speaking with us, of course we could reach an agreement and license you the code for this purpose.
Regards. Martin-o.
