What did you end up doing VocalPoint?
I ended up doing nothing since the laptop/ultrabook market is so vast and changing so quickly (could not decide) - plus - my family simply does not want to deal with anything computer based (and I don't blame them).
So we are using the Dune in the downstairs area and I pulled out our old WDTV Live for upstairs. I tried a few quick nav sessions with MC on a computer here and seems that both my son and my wife would not have the patience for MC at this time when it comes to movies.
The front end on the Dune and WDTV are simple to navigate and have zero issues. Basically - Power up, highlight selection, click Enter on Remote, Enjoy. I am sure that I could get MC to behave like this - but again - sounds like work.
Of bigger concern is any computer would involve logging onto the network and any other crap that is associated with using a machine as a player - that's also a non-starter since my son is too young to know what to do.
My wife is in another sphere - there is no way a bloody keyboard will ever be in the media room...she never wants to be prompted for Windows Update or a new Adobe Flash update or "an error has occurred" or any one of a hundred error messages. Anything like that - at movie time - would get the laptop thrown in the street.
They just want to watch a movie and they want to do it as quickly as possible. So...there ya go.
VP