Hi,
Currently the links from http://www.libsdl.org/projects/SDL_mixer/
are broken to the precompiled PS2Linux binaries.
http://playstation2-linux.com/files/libsdl/SDL_mixer-1.2.4-1.mipsel.rpm
http://playstation2-linux.com/files/libsdl/SDL_image-devel-1.2.2-1.mipsel.rpm
Perhaps the last precompiled release could be listed.
Regards
JG