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Is it possible to mute just a single application (ex. Safari) on Mac while letting other application's sound continue to run through?

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up vote 12 down vote accepted

You could use Audio Hijack Pro:

Audio Hijack Pro screenshot

It's an advanced mixer initially meant for recording an application's audio.

You can adjust the volume of each application separately and also mute them. It's also fully AppleScriptable, so I guess you could associate keyboard shortcuts to mute a given set of apps.

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If you have the (mis-?)fortune to be running 10.4 on a PowerPC Mac, then you can still use Rogue Amoeba's old Detour product (now free.)

You can also accomplish this with their Airfoil product, in a roundabout way, by hijacking Safari and then not enabling any Airfoil speakers.

(It's a shame they didn't revamp Detour, once they'd come up with a new way not using APE, to instantly hijack the sound. I too used to divert Safari to shut up annoying embedded MIDI and Flash. But I can recommend ClickToFlash for handling the latter!)

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If you are looking for something simpler (and cheaper) than Audio Hijack, I just came across an app called SoundBunny. I have not tried it, but it looks like a good alternative for those who just want to control apps' volumes and don't need the recording capabilities of Audio Hijack.

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Please don't recommend programs you haven't tried. – DavidPostill Apr 29 at 8:57
    
@DavidPostill Oops, sorry. Is this an official policy of the site? If so, could you share a link so that I can learn more. Thanks! :-) – J.D. Apr 29 at 21:21
    
It's not really an official policy, but think of it this way - if you haven't tried it you can't be sure it will actually solve the OPs issue. And if you are not sure then suggest it as a comment instead of an answer. – DavidPostill Apr 29 at 21:25
    
@DavidPostill OK, thanks! – J.D. Apr 29 at 21:33

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