A great feature found in Remote that's not available in iTunes on the iPhone or iPod touch is Search. Tap in a few letters and you instantly get a list of all content--artist names, tracks, movies, etc.--containing the search phrase. Tap on a track or video to play it, or tap on an artist or album to browse its contents. Remote even remembers your last search, so you don't lose your results if you switch to another screen.
When controlling iTunes, the Remote program's Settings screen also lets you individually enable or disable remote AirTunes speakers--AirPort Express or Apple TV units connected to speakers or a stereo system. (Unfortunately, the Settings button is located only on the main screen, so you may need to "back out" a bit to access it.)
Remote works well with iTunes, but it's a godsend for Apple TV--especially if, like me, you've got a massive music collection. With the exception of Shuffle mode, I'd given up listening to music on my Apple TV because of the painfully-slow music navigation. With Remote, finding and playing any track in my library is easier than with any device or remote I've used. And I can do it from anywhere in or around my house.
The biggest shortcoming of Remote is that you can't use it to browse the iTunes Store, nor can you initiate playback of an iTunes-rented movie that hasn't yet been transferred to your Apple TV. (To put it more accurately, you can't use Remote to navigate the Apple TV's own interface; Remote effectively replaces that interface.) But for playing media already on your Apple TV or in iTunes, Remote is tough to beat.
Remote is compatible with any iPhone or iPod touch running the iPhone 2.0 software update.
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