Griffin Technology today announced that they are now shipping the SmartDeck Intelligent Cassette Adapter for iPod. SmartDeck allows users to control their iPod using the built in controls of their cassette player. Using patent pending sensing technology, the SmartDeck determines which commands the cassette player sends to the iPod. Some of the features include: control iPod navigation through the car stereo, sets optimal volume on the iPod for best audio quality, intelligent level control for optimal cassette player input levels, and more. Griffin’s SmartDeck is priced at US$29.99.