These directions take into account using the new XBMC software, Kodi, which has a whole bunch of updates. Note the author is using RPiB2, and its overclocked (has heatsinks on it too). This is important cause things like RaspBMC are no longer supported. So if you want the latest stuff, you need to update.
http://www.instructables.com/id/Home-media-center-using-raspberry-pi/