how to add a sound notification to an app that doesn't have one? I use an app to copy and log video files that only has a silent notification and I'd like to add a sound to the notification. my thought was that maybe there is a third party app like keyboard maestro that could trigger an sound action from my app's notification, but I don't think that is possible.

Can anyone suggest a solution or workaround?
Go to System Preferences and there is a Notification Icon in the top row. Click on this and you'll get an image like the one shown below.



Click on your app in the left column and click the 'Play Sound for Notification' box on the right side of this pane.