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I've installed three applications such as "Free Dictionary", "Audio Book", "Advanced Dictionary" and they work well except the sound.

When I click on the sound for starting the pronunciation or starting the audio book, I cannot hear any sound. These applications work well on my brother's laptop which is also Windows 8, but on my laptop they don't.

Please note that my sound driver is working on my HP laptop, because if I try to play any music or watch DVD, I can hear them.

How can I begin to troubleshoot this?

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Have you ensured the applications aren't muted in the Volume Mixer? Does the Volume Mixer show these programs as if they are playing sound (i.e.: they show up in the mixer, and show the sound level fluctuating)? – Ƭᴇcʜιᴇ007 Feb 21 '13 at 20:42
Does the applications depend on a third party framework like flash or silverlight? Do you have a link/explination to where you got the applications from? – Doltknuckle Feb 21 '13 at 20:59
Are these Metro/Modern UI or Desktop apps? – Karan Feb 22 '13 at 0:10

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