A radical simplification of its earlier FM transmitter iTrip for iPod nano, Griffin's new iTrip Pocket ($50) is smaller, simpler, and more limited than its predecessor, fitting ideally on the second-generation nano but working with other Dock Connector-equipped iPod models. With five face buttons for tuning -- two left and right arrows for the FM dial, plus three preset buttons -- iTrip Pocket includes a red light to let you know that the unit is…
