Amazon.com has an iRiver AFT 100 Mobile FM Transmitter for $34.94 with Free Shipping.
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- Mobile FM transmitter for listening to portable audio devices through car stereo n
- Transmits to all FM frequencies (88.1 to 107.9 MHz) n
- Plugs into standard car power socket–no batteries required n
- Connects to the headphone jack of portable MP3 or CD players n
- Easy-to-read blue LCD display