Ginga SDL Multimedia Backend has the following external dependencies:

SDL 2.0.0-6302
http://www.libsdl.org/tmp/

SDL_image (mercurial version compatible with SDL2)
http://hg.libsdl.org/SDL_image/

SDL_ttf (mercurial version compatible with SDL2)
http://hg.libsdl.org/SDL_ttf/

ffmpeg 0.9.1
http://ffmpeg.org/download.html#release_0.9
