On this new galaxy 7 edge I can only hear directions in my car from google maps when the phone is selected as the media. If I switch to radio or SD card as music source the google maps voice directions is muted. With the Iphone 5 in the same car the voice directions would come through my car speakers regardless of the media I was playing. Any idea how I can get the google maps to go through my car speakers in all media ... radio, SD card and phone. FYI the calls come through just fine.