You could get an hdmi switcher and connect it to one of the hdmi inputs. But you would have to change the input on the switcher (but not the tv).
You could buy a Harmony remote and have it change the input on the tv, but I have no idea how Harmony remotes work with htib's.
A real receiver with 4 hdmi inputs would act as the switcher for audio and video so changing inputs on the tv wouldn't be necessary. But you have to buy new speakers and a new subwoofer as well as those Sony speakers will not be compatible with a regular receiver as they are only 3 ohm.Go to the full post