Basically you'll store all your media on a server and play all around you house, on media directors or other streaming devices, like squeeze box players.
you'll have a common interface and control entertainment areas (all media: pvr, dvd, videos, music), lighting, telecom, climate and security devices.
on plutohome.com website we have all this info explained in details with screenshots. the installation is simple to do, even for a non-teckie.
you just need a spare computer where you install pluto and other pc's to do a network boot all around teh house, where you have a tv or a sound system.