http://www.ipodvideomovies.com/ipod-classic-radio-option/

Dunno if you guys have noticed this,
but after poking around in my settings for a while, I came across the main menu settings, and was messing around in there, and noticed a Radio option. It comes checked by default, but I toggled it and nothing is shown or hidden on the main menu. No idea if this could somehow be enabled/if it’s a relic of some old version of the firmware, but it’s still interesting to see..it enebles iPod Radio Remote.
In iPod models other than the iPod nano 5G, the “Radio” option enables the iPod Radio Remote, a separate hardware device that plugs into compatible iPod models and allows the iPod to receive FM Radio signals.
In advertising copy, Apple explains:
Just plug in your iPod Radio Remote and select “Radio” from the main iPod menu. Tuning takes place right there in the color display with your Click Wheel, just as you’d set a classic analog radio. Easily mark a favorite station for quick access later, and switch between favorite stations using either the iPod or the remote.
If you’re listening to a station that supports the Radio Data System,
(RDS) standard, you can even see song title/artist or radio station information in the iPod display [currently not supported in Japan]. The iPod Radio Remote supports FM stations from 87.5 to 107.9 MHz (in both the US and European standards) and 76 to 90 MHz (the Japanese standard).
As first noted by the always excellent iLounge, when used in conjunction with the iPod nano (4G), the iPod Radio Remote also introduced a slick “tagging” option that allows you to flag songs that you hear on the radio for later purchase via the iTunes Store, but this is not yet widely supported by radio stations. The iPod nano 5G — with its integrated radio — also supports “live pause”, which allows one to pause and rewind up to fifteen minutes.
RetroSound MODEL ONE AM/FM Radio
