As new cars have continued to grow line-in ports, accessory makers have released fewer of the FM transmitters that were once widely relied upon to broadcast music from iPods to older car stereos. There's still some demand for transmitters, however, which is why Scosche has released freqOut ($60), an app-optional digital FM transmitter that works with iPods and iPhones. Inside the freqOut package are the transmitter unit -- a circular controller with…
