Cloning this repository:

git clone git://gitorious.org/~pvanhoof/tracker-vorbis-extractor/maemo-tracker-vorbis-extractor.git maemo-tracker-vorbis-extractor
cd maemo-tracker-vorbis-extractor

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

git remote add maemo-tracker-vorbis-extractor git://gitorious.org/~pvanhoof/tracker-vorbis-extractor/maemo-tracker-vorbis-extractor.git
git fetch maemo-tracker-vorbis-extractor
git checkout -b my-local-tracking-branch maemo-tracker-vorbis-extractor/master_or_other_branch