Hello,
Carrying on with my cleanout, I'd like to sell my Griffin iTrip. This is compatible with the older generation iPods which had the small rectangle slot next to the headphone jack. The way it works is that you can download the preset FM stations as a MP3 file (Which sound like morse code), and upon playback of these MP3s the iTrip will automatically change its transmission frequency. When you then play songs it will just transmit on that wavelength. It requires no batteries or anything else.
Asking for
$17 + postage