Apple’s Remote app is a handy little utility. It can be used to control your Apple TV or your iTunes library on your computer. The latest version debuted today and adds the ability to control the playback of iTunes Radio on your Mac or PC.The description for version 4.1 explains how this new iTunes radio feature will work:
With just a few taps on your iPad, iPhone or iPod touch, you can play iTunes Radio from anywhere in your home. Choose playlists, songs, and albums as if you were in front of your computer or Apple TV. Or play them from iCloud with iTunes Match on Apple TV.
Apple released a major overhaul of the Remote app last month, redesigning the app for iOS 7 and adding support for iTunes 11.1. The Remote app is available for free from the iOS App Store. It requires a WiFi connection to an Apple TV or iTunes on a Mac or PC.