Suggestion / request: Per application volume levels
It would be really great to have per-application volume levels, with persistence.
My reasoning is that I'm often running multiple sound producing apps at the same time, for example Spotify in an app and Flowdock in a browser tab. While listening to music, I'd like to still hear notifications of messages from Flowdock, but not at full volume. If I could modify the volume of a Flowdock browser tab and leave other tabs at the normal level, that would be even more helpful (the notification is VERY loud!), but just turning down the browser in general would be great.
Thanks for considering the idea!