You can do an anonymous SVN checkout with the command :
svn co http://milkymist.lekernel.net/svn/
The repository contains the full Verilog sources for synthesis, Verilog test benches, firmware C sources, preset compiler source code in Objective Caml, LaTeX sources of the documentation and build scripts.
You can also browse the sources from the web.
The Trac management website is located at http://milkymist.lekernel.net/.