Is there any difference in the samples used for these two versions of the SY Player? I see a different panner in the 5.1 version which I never use as I define the positioning of the signals using different channels in my DAW or VEPro but I do not hear any difference between the two versions if I route the respective microphones in the same manner e.g a 5.1.2 setup.
I am using VEPPro running on the same Mac as my DAW or Dorico for nearly all my work and there only the stereo version of the SY Player is shown.