cockpit sound in spot view ?

Hi simmers,Could someone please tell me how to modify (aircraft.cfg, panel.cfg, or aircraft sound.cfg) in order to get the sound heard within the cockpit (APU, fuel pump) also working when on spot view.The reason is that when aircraft is parked and engines shut down, and when looking spot view with FSX, there is absolutely no noise, total silence, except airport ground traffic sound, which is not realistic.I feel that hearing APU also on spot view is more immersive.Many thanks for your help and happy new year to you all.Patrick JorandGeneva, Switzerland