What Exactly Is It? Why Is It Good? What It Isn't The Gear to Make It Go iTunes Tagging
Some HD Radio products are enabled to facilitate iTunes Tagging. The "Tag" feature makes it easy for listeners to get new music they hear on the radio. Here's how it works: iPod-capable HD Radio receivers that include the iTunes Tagging feature have a TAG button. When a listener hears a song they like on their HD Radio receiver, they push the TAG button, and the information about the song is placed on their iPod. The next time the listener syncs their iPod with iTunes, they are presented with a list of their tagged songs and are given the option of buying them via iTunes.

HD Radio technology and iTunes: a partnership that is leading the way into the future of audio!