Yes you can get the radio AM or FM or Ipod to play hile in advance appmode follow the following steps
1-Make sure the iphone is connected to the AVH-P8400BH select the mode button on the HU
2- double click the home button on the HU (this will take you to the home screen)
3- select settings from the home screen menu
4- scroll to app sound mixing select low setting
you should now have Am FM and Ipod sound while in advance appmode