Either just buy it, or grab it from cvs and build it. For the latter you will need a fully functional development environment (compiler, linker, development libraries and so on - usually available as one big package in your distro's package management program) as well as cvs itself installed. Then follow
these instructions (scroll down for the Agree button) to check out the sources from the cvs server and build them. You don't need to run the first example since you don't have an old sourceforge.net cvs tree.
Håkan