This is an unofficial collection of XBMC addons.
To install this repository either:
Strongly Recommended: Install the Repositories Installer from http://passion-xbmc.org/addons/?Page=View&ID=plugin.program.repo.installer (XBMC -> Settings -> Add-ons -> Install from zip file), use the app to browse to 'mortstar's repo' and install.
or you can install the repo manually by downloading the repository.mortstar.addons.zip from http://github.com/mortstar/repository-mortstar-addons/raw/master/repository.mortstar.addons-1.2.0.zip and install in XBMC (Settings -> Add-ons -> Install from zip file)