Q. How can I ask you a question?
Yes, absolutely. It's licensed under the zlib license which allows commercial distribution. Please be aware that this may differ for some of the used libraries SDL, SDL_gfx, SDL_mixer and Vampyre Imaging Library. Please refer to their respective sites.
Q. When will the documentation be finished?
That's a really hard one, I know. Every open source project of this kind needs a good documentation. Frankly said, I don't know. I have almost no time to program, so you can imagine how much time I've got to do the documentation. Volunteers are always welcome.