You want to run an FTP server on your Pi? There should be tons of options out there. What distro? Search the package repositories for FTP servers and pick one that appeals to you. If you must have the one you named, and if it isn't provided as a package, look into how to compile it.
I think filezilla only makes a server for Windows. Raspbian comes with SFTP already installed. If you want a plain Jane FTP server both ftpd and vsftp are available in the repository. I've used vsftp extensively on Linux servers and on my Pis. It is easy enough to configure and is fast too.
Interestingly the source code for the client is available under GPL but I cannot find any source for the server or a clear statement what licence it is released under.
The link on the wiki only gives the Windows executable where as the source for the client is available via the 'other downloads' option on the client page.