Top choice for Raspberry Pi Model B+ is XBMC Classic or a lightweight version like XBMC Mini.
Top choice for Raspberry Pi Model B+ is XBMC Classic or a lightweight version like XBMC Mini.
XMBC was changed to Kodi, though it's unclear if the RasPi version reached that stage. Simply install it and use the standard skin—it's likely the lightest option. Keep in mind the RasPi GPU isn't very strong, so streaming 1080p at a bitrate higher than YouTube's will probably not work well.
I’d search for a more efficient Kodi or XBMC setup tailored to the RasPi.