here's a message for the multitude of FreeBSD users out there :) : MLT[++] and Kdenlive are finally coming to the ports tree, for the first time ever! we're still waiting for them to be committed, but that will probably happen in a few days. anyway they won't be available as packages in the next 7.1 FreeBSD release yet
in the meanwhile you can download the shell archives (.shar) and install through them... here's how to: http://kdenlive.org/user-manual/downloading-and-installing-kdenlive/pre-...
there are two flavors of ports: release and development. choose "release" if you want the official release (0.7 and soon 0.7.1), or "development" if you'd like to test the newest features and get a lot of bugs fixed
just a note: if you're planning to report bugs back to the Kdenlive team (on http://kdenlive.org/mantis) please build the ports with WITH_DEBUG=yes, or your gdb logs will be useless