sudo apt-get install libgstreamer0.10-0 gstreamer0.10-plugins-base gstreamer0.10-plugins-good gstreamer0.10-plugins-bad gstreamer0.10-tools gstreamer0.10-alsa
sudo apt-get install debhelper
sudo apt-get build-dep gstreamer0.10-plugins-farsight
apt-get source gstreamer0.10-plugins-farsight
wget http://farsight.freedesktop.org/releases/gst-plugins-farsight/gst-plugins-farsight-0.12.9.tar.gz
tar -xzvf gst-plugins-farsight-0.12.9.tar.gz
Then make and install it.
git clone git://git.collabora.co.uk/git/user/kakaroto/nice.git libnice
cd libnice
git checkout origin/nice-kakaroto
cd ..
git clone git://git.collabora.co.uk/git/user/tester/farsight2.git farsight2
cd farsight2
git checkout origin/nice-rebased-30-07-2008
cd ..
cd libnice
./autogen.sh --prefix=/usr
make
sudo make install
cd ../farsight2
sudo apt-get install gtk-doc-tools
./autogen.sh --prefix=/usr --disable-python
make
sudo make install
sudo ldconfig
svn co https://amsn.svn.sourceforge.net/svnroot/amsn/trunk/amsn amsn
sudo apt-get install tcl-dev tk-dev libjpeg-dev