Menu doesn't show on additional desktops

There is a known issue in Sound Control 3.1 and later where the Sound Control menu doesn't show on additional desktops. This issue is fixed for the next update (3.1.3) that is currently being tested and will be available soon.

In the meantime there is a work around.

1. Drag the Sound Control application to your dock.
2. Control-click on the Sound Control icon in the dock.
3. Select Options -> Assign To -> All Desktops

Once you have done this you may remove Sound Control from your dock. Or, you may like having it there. Click on Sound Control in your dock and the Sound Control menu will popup from the dock.