Kenwood on Friday introduced its I-K50 in-car head unit with support for Apple's iPod players and the iPhone 3G via its front-mounted USB port. The I-K50's CD drive will play back MP3, WMA and AAC-encoded files, while the USB port will allow users to plug in USB flash memory keys loaded with the same supported types of audio formats. Plugging in iPods, including the classic, nano or touch, will al
