Hi, need help with this… for some reason I can’t get any surround (5.1) sound anymore with Audirvana. I have a Mac Mini connected via HDMI to my surround receiver. Other sources with surround (Blue-ray player) work fine. Also when I do a 5.1 surround test from my Mac Mini with the audio MIDI Setup utility all speakers work fine… despite all this Audirvana only works in Stereo (it worked before with ISO surround files).