[ferent]

The only boolean condition for mute is Player.Muted and to obtain mute icon, the only way is to decrease volume to 0.

But the mute red icon is there in some parts of the Skin, together with the clock in the top right corner. The problem is that the clock disappear when you are inside the library view, don't know if this is an intentional aesthetic thing or you can show the clock in all the views with the mute icon in case the mute key is pressed.

Mute icon is include in top bar and top bar is removed on libraries views. But I can show only mute icon on libraries like that :

That is perfect! just what I was looking for.