I have a Logitech Z-5500 5.1 system connected to my Mac via S/PDIF output. I have tried every pre-release version of Infuse for Mac, and none, including the latest RC2, had 6-channel encoded optical output working. Rather, the sound is being transmitted as regular stereo.
I have no issues in either IINA or VLC, where I am able to get both encoded Dolby Digital and DTS on my Z-5500 receiver, depending on the source. This is the only obstacle preventing me from jumping over to Infuse on my Mac. I would be grateful if this issue could be addressed.