I have read most of this forum, the manual and yet I can't seem to grasp exactly how to be in control of the sound field modes on this receiver. In short I would like to be able to set Prologic II when I want but I can't find any simple way to do that. I don't recall ever having this issue with any modern receiver in many years. Can someone point me to a resource that will help or where this might be posted. I know it has got to be something simple I am missing. I have no problems for Dolby Digital, DTS, HD Audio for Blu Rays and Direct Stereo but I just cannot get to Prologic II for music or movie playback.