You can download the Windows binary from here:

Windows Binary (539KB)
Linux/i386 Binary (1.2MB)

The latest source code (extracted from the Git repository) can be downloaded in ZIP or TAR.GZ format. If you want to work on the code, it is recommended to use Git with the following repository:

git://github.com/badsector/dcpustud.git

Or visit the GitHub project page.