In my opinion using smart remote applications like the xbmc remote for android or xbmc commander (ipad) are the future. They are actually the reason why I started with an htpc and got rid of my mediaplayer. This is one reason (the price is another) why I would rather not buy the Amulet remote.
In one of the videos I saw jitterjames using an iphone with some program that records to wav-files and then uploads this to the pc. Does anyone know an android alternative, I can't seem to find one.
Even better would be if the android phone could act like a "virtual microphone", e.g. there could be some client-server model where the phone sends audio to the pc and the pc has a driver running that makes application think it's just an ordinary microphone. Not going to happen soon I'm afraid...