Cloning this repository:

git clone git://gitorious.org/~crater2150/gentoo-multimedia/crater2150s-gentoo-multimedia.git crater2150s-gentoo-multimedia
cd crater2150s-gentoo-multimedia

Add this repository as a remote to an existing local repository:

git remote add crater2150s-gentoo-multimedia git://gitorious.org/~crater2150/gentoo-multimedia/crater2150s-gentoo-multimedia.git
git fetch crater2150s-gentoo-multimedia
git checkout -b my-local-tracking-branch crater2150s-gentoo-multimedia/master_or_other_branch