When you connect a MacBook or whatever other model of Mac to a display with an HDMI or DisplayPort, macOS has the reasonable expectation that you want to control the volume from that external device.

Fortunately, it is possible to re-enable your Mac's native volume controls and use them to adjust the sound level coming out of your monitor's speakers.

One of Workflow ’s least known functionalities is its ability to get details about the hardware it’s running on and control some system features. Among these, Workflow can both retrieve an iOS ...

Apps have their own relationship with producing audio. They often, but not always, err on the side of not making a peep depending on other settings until you take action.