Thank you Dave; you're very kind, but it's a challenge I don't need. I never watch terrestrial television, watch satellite television only for things like the Tour de France, never listen to music (other than the very occasional concert by choirs such as Harry Christophers' "The Sixteen" [1]), and if I want to watch a film I download it using uTorrent, convert it to something my Blu-ray players can handle, and watch it in bed while I wait to go to sleep. So I can't imagine Kodi/XBMC (?"XML-based media centre"?)
playing much of a r