Something I'm looking into ... we may be building a new house in less than a year ... is putting 8-10 " TOUCH screens in the walls. Then, I would simply access a central "Manager" library and this would be opened read-only. Then, in theater mode, AMAZING!!!
Just imagine an inwall system like that! Now that I think about it, those UMPC's are exactly what's needed. They are basically a laptop but with a touchscreen over the entire front--I think it requires a stylus, though. I want TOUCH screens.
Ideally, in-wall speakers would be added to the rooms then and each MC would be, ideally, able to control two zones (two different sound cards) so one box could control living room, eating room, back deck, garage...Imagine a little, lower left box with CHECKBOXES for each zone. You would check the boxes that you want to change and any change (play song, volume, etc.) would be sent to that zone. Then you could play the same music in all zones easily from one MC box.
That would be incredible.