Playback, no sound

I am using a Mac mini running OS Sonoma and the latest Audacity (2.4.2). The playback soundbar shows activity, but no sound. I listed the correct speakers, and rescanned the audio devices.

The current version of Audacity is 3.4.2 - this may or may not cause your problem.
What are your system settings for sound output?
What are your settings in Audacity for sound output?