The usual way to download the crossfire code on sourceforge is by using svn .
That is described on the downloading page.

It is possible, to download the code by rsync, too.

rsync -a -v a.svn.sourceforge.net::svnroot/crossfire/$DIRECTORY

The above shell code would list the files.

mkdir -p ./NewDir/
rsync -a -v a.svn.sourceforge.net::svnroot/crossfire/$DIRECTOTY ./NewDir/

The above shell code would download the files into ./NewDir/ directory.

DIRECTORY would be the usual arch, maps, client, server, et cetera.

And for the older cvs repository:

rsync -a -v a.cvs.sourceforge.net::cvsroot/crossfire/$MODULENAME

The above shell code would list the files.

mkdir -p ./NewDir/
rsync -a -v a.cvs.sourceforge.net::cvsroot/crossfire/$MODULENAME ./NewDir/

The above shell code would download the files into ./NewDir/ directory.

MODULENAME would be the usual arch, maps, client, crossfire, et cetera.

A short test for the /sounds/ directory worked for me. It downloaded mainly `,v' archive files, which need to be checked out using rcs .