Here, you can download the source code of mupen64 0.4 and all the plugins included in its binary package. Some plugins were already published but i've updated the source code to compile on my system.
The core source code:
http://mupen64.emulation64.com/files/0.4/mupen64_src-0.4.tar.bz2
RSP plugin:
http://mupen64.emulation64.com/files/0.4/hack_azi_rsp_hle.tar.bz2
Input plugins:
mupen64 basic input plugin:
http://mupen64.emulation64.com/files/0.4/mupen64_input.tar.bz2
blight input plugin 0.0.8-b:
http://mupen64.emulation64.com/files/0.4/blight_input-0.0.8-b.tar.gz
Sound plugins:
jttl SDL sound plugin 1.2:
http://mupen64.emulation64.com/files/0.4/jttl_sound-1.2.tar.bz2
GAP 0.5:
http://mupen64.emulation64.com/files/0.4/gap-0.5.tar.bz2
dummy audio plugin:
http://mupen64.emulation64.com/files/0.4/dummyaudio.tar.bz2
mupen64 audio plugin:
http://mupen64.emulation64.com/files/0.4/mupen64_sound.tar.bz2
Gfx plugins:
rice daedalus (an old version but that's the one that had best opengl support):
http://mupen64.emulation64.com/files/0.4/riceplugin.tar.bz2
Gln64 0.4.1:
http://mupen64.emulation64.com/files/0.4/glN64-0.4.1-rc2.tar.bz2
Glide64 0.7 ME SP1:
http://mupen64.emulation64.com/files/0.4/glide64_0_7_ME.tar.bz2
The core source code:
http://mupen64.emulation64.com/files/0.4/mupen64_src-0.4.tar.bz2
RSP plugin:
http://mupen64.emulation64.com/files/0.4/hack_azi_rsp_hle.tar.bz2
Input plugins:
mupen64 basic input plugin:
http://mupen64.emulation64.com/files/0.4/mupen64_input.tar.bz2
blight input plugin 0.0.8-b:
http://mupen64.emulation64.com/files/0.4/blight_input-0.0.8-b.tar.gz
Sound plugins:
jttl SDL sound plugin 1.2:
http://mupen64.emulation64.com/files/0.4/jttl_sound-1.2.tar.bz2
GAP 0.5:
http://mupen64.emulation64.com/files/0.4/gap-0.5.tar.bz2
dummy audio plugin:
http://mupen64.emulation64.com/files/0.4/dummyaudio.tar.bz2
mupen64 audio plugin:
http://mupen64.emulation64.com/files/0.4/mupen64_sound.tar.bz2
Gfx plugins:
rice daedalus (an old version but that's the one that had best opengl support):
http://mupen64.emulation64.com/files/0.4/riceplugin.tar.bz2
Gln64 0.4.1:
http://mupen64.emulation64.com/files/0.4/glN64-0.4.1-rc2.tar.bz2
Glide64 0.7 ME SP1:
http://mupen64.emulation64.com/files/0.4/glide64_0_7_ME.tar.bz2