I've searched these forums and various internet searches and haven't been able to find a solution. I'm testing out a new iPhone GPS app (MotionX-GPS Drive) to get rid of my separate Bluetooth-connected Nuvi and so far so good. I have a cable connection that plays the Nav voice guidance and music through my car stereo. The voice guidance ducks the music during navigation. One issue I have is with phone calls. The Nuvi has a relatively good speaker, but if I get rid of that, I'd like to have the phone audio play through the stereo as well. Anyone have a solution/suggestion?