Hi @john
Thanks for the update. Whilst frustrating - looks like this has been a known issue for a long time - it’s good to know that it wasn’t anything that I was doing incorrectly.
I’ve done some more testing and it looks like Roon plays to whichever device is listed first in the OSX Aggregate Device setup. Two examples attached - in both cases Roon plays only on the device at the top of the list.
What doesn’t seem to matter is which device is set to be the clock source - in the two examples the clock source is the same but Roon plays to the first device in the list under Audio Device.
Mike
