I have read on this forum that it is possible to use the aux jack to hear a phone call through your car speakers. I can't seem to get this to work on my droid. Do I have to have a specific app installed or do I need something physical (a car docking station?) to get this to work? I plugged the cord in and tried it with the stereo on AUX and on FM with no luck either way. I also tried on and off speakerphone in both modes. If its simple set up that I've overlooked or simply operator trouble can someone please tell me what I need to do to use this feature? Any input would be very much appreciated!