Amazon.com has a Griffin iTrip Nano LCD/FM Transmitter for iPod Nano for $19.99 with Free shipping on orders over $25.
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- FM transmitter for iPod nano with on-screen tuning n
- Powered by the iPod nano–requires no battery n
- Supports US, International and Japanese tuning modes n
- Stores Last 3 used station presets n
- Charge and sync iPod nano while iTrip is connected via USB