Did you see this? I know this has been around for awhile, but there is something significant going on here. Apple and a company called iBiquity Digital teamed up to provide a service to folks with digital HD radio that will let people tag a song they hear for purchase at the iTunes Store. The service is called iTunes Tagging and it's pretty cool technology.

Hi-Def Radio Tagging: Hear It on the Air, Buy It on iTunes