Cloning this repository:

git clone git://gitorious.org/qmmp-fooui/qmmp-fooui.git qmmp-fooui
cd qmmp-fooui

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

git remote add qmmp-fooui git://gitorious.org/qmmp-fooui/qmmp-fooui.git
git fetch qmmp-fooui
git checkout -b my-local-tracking-branch qmmp-fooui/master_or_other_branch