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Helpful answers
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Aug 24, 2015 9:09 PM in response to mattfromburghillby UGADog,So I take it you have tried the mute button, volume up and down, and rebooting and trying these keys again? Is it just the school videos that have the problem? Have you tried YouTube or other files you know have worked on your system in the past and found them to be operative or inoperative?
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Aug 26, 2015 7:40 PM in response to UGADogby mattfromburghill,Thank you for your input. I tried your suggestions. The YouTube videos have sound. It is just my videos from school. Is there some software I need to get or update maybe?
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Aug 28, 2015 10:58 AM in response to mattfromburghillby UGADog,Ok, since youtube is working we know it is not a hardware issue. What type of video is the school video? Are you using QuickTime or a third party app? Make sure your player supports the video format. Media formats supported by QuickTime Player - Apple Support What OS X version are you running?