Sound panel shows duplicate and irrelevant entries
I think the old panel suffered from this bug too, but since the streams were hidden away there it wasn't so much of a problem.
- I have Spotify running one time, but it is showing four entries.
- Should speech-dispatcher be shown? That's a system component and not something I'm thinking of as an application. If so, presumably once instead of three times?
The list being too long means that I can't see the rest of the controls, further down (Adwaita doesn't make it very clear that there's more content here until you move your mouse over the window to bring up the scroll bar, but I think that's known & not g-c-c's problem).