NIVEUS Media Center : hardware for your living room.
One of the better completely built systems that for viewing your content in your living rooms or anywhere else within network distance.

http://www.niveusmedia.com

Within a typical setup you can have

• a media server with blue ray support
• 200 disc carousel changer ( only CD and DVD support) and you can daisy chain them so if you have 1000 discs your covered.
• a storage server with the option of 2 or 4 terabyte.
  
• media extenders
  
• and to top it off is the remote control which is a PC based application.
  

The nice thing about the remote is that you can load it onto say a touchscreen palmtop device running XP (or vista) and that then becomes your nice large fully functional multi zone interface, connecting you via wifi, you can control every aspect of your content sending it to any particular zone that you have setup. Full control of everything everywhere.
You could have multiples of these hand held devices which can also act as media viewing/listening devices.

Note : a point to make also is that it will also control your already running microsoft media center PC and any Microsoft media centre extenders out there. so you can integrate it into your already existing setup.

Typically if you wanted an all in one device that was setup and running perfectly and you had the money to burn then this would be it. You COULD build it yourself at a fraction of the price but then hey you'd be building it yourself and it would prolly break!

There are other systems that will do pretty much similar tasks such as the SONOS, although I dont think the they are as versatile or as scalable as the Niveus.