Depending on the size of your TV and the size of the room, you might look at a Sony HT-CT150. I don't think that will solve your remote problem if your TV doesn't provide for muting the built-in speakers when external speakers are attached.

You might also consider looking at a Logitech Harmony universal remote. Rather than the standard universal remotes that require input of codes, the Harmony is programmable by a computer and links to a database of thousands of brands and models of audio/video equipment.