This Media Player

MeritLine.com has the iPod FM Transmitter $13 + $0 shipping = $13 shipped. It automatically powers and recharges battery with car adapter.

Product description from MeritLine.com:

Description:

• FM Transmitter Modulator for iPod iPhone MP3 Player;
• Compatible with all iPods with a dock connector; Listen to your MP3 player iPod, iPhone on a channel of FM radio in your car or during your evening at home;
• The transmitter plays all your favourites songs on any radio, just wirelessly and in stereo digital quality;
• Connect the transmitter to your player, select a channel FM, FM88.1Mhz to FM107.9Mhz (interval 0.1 MHz) on your radio, and enjoy;
• Backlit screen;
• Covering an area of 3 to 9 meters;
• Recharge via the player or via the cigarette lighter adapter;
• Your device is also recharged when plugged into the cigarette lighter;
• Power: self-powered from the iPod / iPhone;
• Sound Frequency: 50 to 15,000 Hz;
• Dimensions: L 4cm D 2cm;
• Include a car plug charger.

Product link.