I currently use a Kensington LiquidAUX car kit to both charge my iPhone and play tunes through my car stereo speakers via the auxiliary port in my car. The sound quality is much better than one of those FM transmitters. However, when making/receiving phone calls, the music fades out then the call comes in over the iPhones own speaker. The volume on the iPhone speaker is too low to be of use for hands-free phone calls, unless Im stopped, and windows rolled up. Does anyone know of a device that will function like the LiquidAUX (charge iPhone and play audio through aux port) with the addition of the phone call audio coming through the car speakers instead of the iPhone speaker? Seems like this would be the ideal device, and Im surprised I cant locate one.