Ok. That’s progress. I’ve not hooked the audio up to my radio at all, so I’m not sure if I’m missing something. I will see if I can replicate those results. The “documentation” for this radio is lacking, as it’s all been hacked together from other people.
There is a possibility that the volume defaults to zero, or mute is enabled or something, I will investigate.
The idea with the setup button was to be able to set things like volume, treble and bass. That’s on the want list.