Green Hilltop: Actually, it's very simple - just switch off the music for the app in your sound settings, if you can do that in Mac like it's possible in Windows in the sound mixer. ;)
I just realized that I had thought of this before, but for some reason I didn't think of it this time until I saw the thread where other people suggested the very same thing.
rustinpeace91: Really? Are you sure? I'm in sound settings right now and I can only control my inputs and outputs, not individual apps. a quick google search told me that it's not possible either.
One solution would be to rout what I want to hear (say youtube) through my audio interface via sound flower and just turn off the other outputs. But that's such a pain in the butt. Why can't they just add an audio option. This is 2014!
It is possible if you have Windows Vista or 7 which most users here have. For any of these it works and a quick google search should tell you it's possible,
this for example is the first result of my search. If you don't have either of the two you should say so before saying that it's not possible (esp. when the user above you also confirms it can be done) because apparently it's not possible on Win 8, as one user states
here:
"As I mentioned here, there's no way to control the volume of individual Metro/Modern UI apps (not unless the app has its own volume control, which is unlikely). Metro apps are all bundled under System Sounds in the Volume Mixer, so it's an all-or-nothing proposition unfortunately.
Edit: Perhaps you can try keeping the main volume high, the System Sounds volume low/muted (which will affect all Metro apps including games), and open YouTube in Desktop IE or other browser."