Clear Channel Radio has announced that more than 340 of its primary HD Radio stations are now compatible with iTunes Tagging. “Radio continues to be the number one way that people discover new music, and the HD Radio iTunes tagging capability lets listeners add songs to their iPod playlists with just a push of the button,” said John Hogan, president and CEO of Clear Channel Radio. “With the vast majority of our HD primary stations now offering this exciting feature, we’re demonstrating how radio’s collaboration with the iPod benefits consumers.” Announced last September, iTunes Tagging is a new HD Radio feature designed to further boost iTunes sales by allowing listeners to “Tag” the currently playing song, automatically adding its information to a “Tagged” playlist on the connected iPod. When synced with a computer, the playlist appears in iTunes, making it easy to purchase tagged tracks from the iTunes Store. For more information on iTunes Tagging, read our Complete Guide to iTunes Tagging, and our review of the Polk Audio I-Sonic ES2, one of the first iTunes Tagging-capable HD Radio units.