Version 0.2.7 Binaries have been released. See https://sourceforge.net/projects/kqthebetrayer/files/
If you want to try the very latest version you can always download it with subversion.
svn co https://kqthebetrayer.svn.sourceforge.net/svnroot/kqthebetrayer/trunk
But be warned it is the development version for a reason.
Installing from source
If you are using a Debian related distro you will need to install the appropriate packages:
apt-get install libaldmb1-dev liblua5.1-0-dev lua5.1 gettext autoconf autopoint
Extract the archive. Then you will need to run these commands:
WARNING- If you “make install” it WILL overwrite a KQ Lives install.