Now available as a free download from the App Store, version 2.0 of Apple's Remote app is now optimized for both the iPhone 4's Retina display and the larger screen real estate of the iPad. (Don't feel left out, iTouch owners, Remote'll play nice with you, too.) Using your home Wi-Fi network, you can control both iTunes and the new iOS-based Apple TV, easily controlling playback and even using the QWERTY keypad to find content. If you have AirPlay speakers installed, you can even adjust each individual speaker from the app. Shared libraries are supported, as well as creating and editing both personal and Genius playlists.
Download it here.