You can grab the source or the 32/64 bit executables at the project's google code page here. Also be sure to check out the game compatibility list and bug tracker on said page.FEATURES:
* Dynamic recompilers for 32-bit (x86) and 64-bit (amd64) machines
* 3 OpenGL video plugins: glN64, RiceVideoLinux, Glide64
* Hi-resolution texture support in Rice Video
* GTK2-based GUI
* Command-line options for integration into other systems
* Installation support for multi-user systems
EDIT: You can grab the windows WIP here.
EDIT 2: Any Debian/Ubuntu users can try this repository on for size (thanks to byuu for the heads-up)