Have you checked the HD Digital Radio yet?
If not then do go through this: 

Radio technology is moving fast, new technologies are emerging to make the radio service more better. HD radio technology is the most significant leap in the radio broadcasting technology. HD technology has converted analog broadcasting in to a digital broadcasting. HD radio technology ensures superb sound quality. HD radio is free of cost, just get a HD radio receiver for your radio and enjoy the quality sound in your home, office or car. HD radio technology is already used by number of local radio stations and its number is increasing day by day.

Get a Polk iSonic ES2 for your self, it has advanced acoustic system supported by digital signal processing. Polk iSonic ES2 is HD technology enabled radio product and it is best of its kind available in the market.

Polk iSonic ES2 not only offers you the service of radio it also work as alarm clock, ipod port and itunes tagging. However one of the best feature of this product is its iPod tagging.

All you need is an itune tagging enabled HD radio receiver. You can tag your favorite song on your local FM radio station, just by clicking the tag button, this process will simply transfer all the relevant information about the song from your FM channel to your i pod. So the next time when you will connect your i pod to the computer the song will be show up in a play list called tagged, just click the download button and get the song directly from I tune music store. This  latest HD radio receiver technology enables you to tag the song while you are enjoying it in its pure digital sound technology. HD radio station has launched HD2 and HD3 digital broadcasting station, ensuring better sound and better service.