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I've been spoiled by my ability to control the volume (or mute) any individual program running on my computer. I just tried a Modern-UI game from the store and it was shockingly loud, so I did what I normally do - go to the audio mixer to mute it.

It didn't show up in the system volume control! Is there something I'm missing? Is it truly up to every individual application? Can I mute all Modern-UI apps without muting all audio?

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up vote 10 down vote accepted

There seems to be no way to control the volume of individual Metro apps from a single interface, which certainly seems like a step back to me.

All you can do (in most cases) is select Settings from the Charms bar (Win+I) and click the speaker icon, or use the desktop volume control from the tray/notification area.

However, if an app does provide its own volume control you should be able to locate it by looking under its own Settings in the Charms bar.

Edit: Apparently, not only is the lack of a Metro audio mixer by design, Microsoft is also discouraging devs from including per-app volume controls as per this MSDN blog post:

There is no audio mixer in this environment as there is in the desktop. It still exists for desktop applications, but your app won’t show up here because we felt it was not a great experience to pop out into desktop to adjust relative app volumes. Instead, we are encouraging apps to not include volume controls. This way users are focused on the master volume control which helps simplify the entire volume experience as well – but that’s a different story.

(Note: Substitute "simplify" with "dumb down").

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Thanks. That's what I was afraid of. – Mark Allen Nov 18 '12 at 5:54
I don't feel it's a great experience for you to have to breathe in AND out so we're just going to disallow it all together. Guessing there is a real technical reason behind this one that they didn't want to admit yet. – Andy Feb 25 '13 at 15:50
Irrespective of the AppContainer sandbox used, I see no technical reason why they couldn't have app-specific volume sliders for Metro apps just like Desktop apps. I think it was purely a design decision, or maybe a business one to reduce time/money spent and get the product out of the door. Maybe v2 of the UI in Windows "Blue" will have it... – Karan Feb 25 '13 at 16:00
It makes sense to do it this way... if your apps are running on a device. My PC is not a device, though, no matter how much anyone wishes otherwise. – Mark Allen Jun 20 '13 at 2:39
@MarkAllen: I would argue that it doesn't make sense even on a "device". Say I have a full-featured Win8 tablet or laptop. Why should it not have app-specific volume sliders? (BTW, Win8.1 "Blue" has no changes in this respect.) – Karan Jun 20 '13 at 2:42

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