I’m running Dorico 2.2 on a new (2018) Mac mini under Mojave 10.14.1.
I can send system audio, and output from other audio apps out to either the “External Headphones” output, which I prefer, or to “Mac mini Speakers”.
Dorico’s Device Setup offers 2 choices, both labeled “Built-in Audio”. No matter which one I choose, the output of Dorico is routed to the internal speakers. I can’t get it to output to the headphone jack, which I have connected to a JBL speaker bar via mini-plug.
(see 2 attachments)