Are you aware that Anki (version 1.2.0) is in Trisquel's repository? That
Pitivi (version 0.15.2) is part of Trisquel's default install? It is the
latest stable version. The version you are talking about is a buggy release
candidate. At least, that is how Debian calls it (the package is not
If so, the same version of Pitivi is available from the package manager.
I would try to install (with 'dpkg -i' or with a double click after
installing GDebi) .deb packages from http://packages.debian.org. You start
with this one (download section at the bottom of the page), see the missing
dependencies, download them from sid's repository, try to install them,