Griffin Technology today announced its new, pocket-sized FM transmitter for iPod, iTrip Pocket, is now available and shipping. iTrip Pocket lets iPod users listen over the FM radio in their car, without encumbering wires. Barely bigger than the dock connector it plugs into, iTrip Pocket is designed to match the profile of the 2nd generation iPod nano, though it also works with other dock connector iPod models. iTrip Pocket broadcasts the audio signal from the user’s iPod to any user-selected FM frequency, sharing the music with the whole car. iTrip Pocket FM Transmitter for iPod is priced at US$49.99.