I have mac mini late 2012 , running JRiver latest alpha release, I could not get 5.1 sound from Tos Link while palying SACD ISO. I tried mac mini connect to ONKYO TX-NR 509 AVR through HDMI, it dont work. But when I play DVD Audio with built in Toslink connect to ONKYO TX-NR 509 AVR , on Mac DVD Player i can hear 5.1 sound, even Avr show it is Dolby D . Is there solution for this any fix, and any hardware that can do, since Mac mini will be my single source for playing Audio.