I could not get the dependencies to install from the GUI after I added them to the
repository list... but from the command line it seems to be working a bit better.

Here are the notes from the readme file:

To use Cinelerra CV edition (http://cv.cinelerra.org) with Ubuntu Feisty you need
to make sure of two things:

1. Make sure you have universe, multiverse and restricted repositories enabled

2. Add the following repository to your sources.list file, according to your CPU type:

- i686:

    deb http://www.kiberpipa.org/~gandalf/ubuntu/feisty/cinelerra/i686/
./

- athlonxp:

    deb http://www.kiberpipa.org/~gandalf/ubuntu/feisty/cinelerra/athlonxp/
./

- pentium4:

    deb http://www.kiberpipa.org/~gandalf/ubuntu/feisty/cinelerra/pentium4/
./

Then you can just do:

apt-get update

apt-get install cinelerra

My install/download is running so it will be a little bit before
I have any results to report.