load_textures() was changed to load_resources() and will now load all sounds in sfx/. playing via play_sound(char *name) (or the pointer variant). positional audio is not implemented yet.
and some other changes.
After this short break, I have to announce that this project is no longer called openth. The name was stereotypical and conflicted with Open Theme Hospital. Thus, gentlemen, we are now working on Seiyou (西洋). Thanks to lachs0r for this wonderful suggestion.
Also the lincense has changed. Farewell, gnutardedness, hello MIT. I feel somehow relieved now after freeing the project of nearly one thousand lines.