I've been looking for LinuxMCE videobrowsing functionality in the forums, but haven't found any.
What I have found is the weborbiter and the touchorbiters that works as remote control in cool ways,
but what I've been looking for exactly is browsing ON the remote itself with playback on the TV or projector.
If i understand, you are looking for an orbiter. Currently the touch orbiter was released and accepted for iOS and i believe you can find it in the app store, and we also have an android orbiter in the works. Its pretty unstable at the moment but if you search google market you can experiment. Its under active development at the moment.