Apple has updated its free Apple Remote app to version 2.0. New in this release its the support for iPad’s bigger screen, Retina Display support for iPhone 4 and compatibility with the new Apple TV.
Apple Remote app is a better remote than the hardware remote that comes with your Apple TV. And you can use it to stream your iTunes library to Airport Express beside AppleTV. If you have an AppleTv or Airport Express hook up to your home theatre system, you can use Apple Remote app to control the playback of audio without the need to switch on your TV screen.