First International Digital, Inc. on Monday introduced its newest series of , the 440FM and 450FM, which are compatible with any MP3 player, including the iPod. Both adapters allows users to wirelessly broadcast music from portable audio devices to a car or home FM stereo. The adapters operate from a range of 10-30 feet and plug into a car's 12-volt cigarette lighter. The 440FM offers 12 channels of digital tuning for $30, while the 450FM retails for $40 and offers 100 channels. The 450FM can also be powered by a AAA battery. FID's irock Web site has not been updated to reflect the new products.