IMac looses sound for 1-2 seconds when soundcard is idle for a minute

I've had this problem coming and going.
If I don't touch the computer for a minute or two, the sound automaticaly mutes or turns off or stops working or something. Meaning I get no notification sounds, no email sounds, no iMessage sounds, no system sounds in general.
Now this is very obvious when I pause a video on VLC. I press play, the video starts and the sound starts after 1-2 seconds.
Same if I press the volume up on the keyboard. Sound starts working again after 1-2 seconds.
Now if I have itunes playing music the sound never mutes. Same if I look at a video, press pause and play instantly. Leave it pause for a minute or two though and there goes the sound.
It is happening as I write. I have no music or video playing atm, so the soundcard is not being used and I have no system sounds at all. I send an email to me with my phone, computer shows the new email notification but no sound. I press volume up/down, play some whatever audio and the sound gets kickstarted again after 1-2 seconds.
I have tried plugging in and out everything, resseting the PRAM and SMC, using headphones, the internal speakers, external speakers, terminate all background apps that are not needed by the system. Tried playing with the sound settings, nothing.
I restart the computer, sound works prefrectly. I start using the mac to send an email, or browse the web, and this system "mute" starts happening.
Help?

Hi, have you found something work for you ?
Happens to me as well but not started in mavericks all started with Mountain Lion , a few weeks before he left mavericks , I thought the problme would be solved by updating , but he did not, it's very frustrating strange thing is that in my case not only iTunes is , if any player, have proven Vox and another which I forget the name .
I also feel the same when you play a song in quick look ( Finder) .
I am desperate this problem is with me for the last month and a half went to a apple store and tell me that my machine has nothing that can not help me, and tried everything , reset my machine with a clean install , restart PRAM , repair permissions hise disk hardware test , and nothing has changed.
When iTunes pause my machine freezes a moment and returns to normal when continuous playback , stops about 1s though sometimes hard to 5s .
We appreciate if you find solution , because I am going crazy . Since neither in apple have been able to help me .
My machine is a Macbook Pro late 2012. Mavericks , iTunes 11.1.3 did not correct my mistakes. Do not know what else to try .

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0xffffff81f43438b0 : 0xffffff7fa37fd6a8
0xffffff81f43438f0 : 0xffffff80231b38f4
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0xffffff81f43439a0 : 0xffffff80231bc2e5
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com.webroot.driver.SecureAnywhere          104
com.logmein.driver.LogMeInSoundDriver          1.0.0
com.apple.filesystems.smbfs          2.0.0
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.driver.AGPM          100.14.11
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleBluetoothMultitouch          80.14
com.apple.iokit.IOBluetoothSerialManager          4.2.0f6
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleUpstreamUserClient          3.5.13
com.apple.driver.AppleHDA          2.5.2fc2
com.apple.kext.AMDFramebuffer          1.1.4
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.AMDRadeonX3000          1.1.4
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.driver.AppleMikeyDriver          2.5.2fc2
com.apple.driver.AppleIntelHD3000Graphics          8.1.8
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleHWAccess          1
com.apple.driver.AppleSMCLMU          2.0.4d1
com.apple.kext.AMD6000Controller          1.1.4
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.driver.AppleIntelSNBGraphicsFB          8.1.8
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleLPC          1.7.0
com.apple.driver.AppleThunderboltIP          1.0.10
com.apple.driver.AppleIRController          325.7
com.apple.iokit.SCSITaskUserClient          3.6.0
com.apple.driver.AppleUSBCardReader          3.3.5
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          35
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.4.0
com.apple.driver.AppleUSBHub          650.4.4
com.apple.driver.AirPort.Atheros40          700.74.5
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.iokit.AppleBCM5701Ethernet          3.6.9b9
com.apple.driver.AppleAHCIPort          2.9.5
com.apple.driver.AppleUSBEHCI          650.4.1
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          2.0
com.apple.driver.AppleACPIEC          2.0
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          216.0.0
com.apple.nke.applicationfirewall          153
com.apple.security.quarantine          3
com.apple.driver.AppleIntelCPUPowerManagement          216.0.0
com.apple.kext.triggers          1.0
com.apple.driver.IOBluetoothHIDDriver          4.2.0f6
com.apple.driver.AppleMultitouchDriver          245.13
com.apple.iokit.IOSerialFamily          10.0.7
com.apple.driver.DspFuncLib          2.5.2fc2
com.apple.vecLib.kext          1.0.0
com.apple.iokit.IOAudioFamily          1.9.4fc11
com.apple.kext.OSvKernDSPLib          1.14
com.apple.iokit.IOSurface          91
com.apple.iokit.IOAcceleratorFamily          98.7.1
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.iokit.IOBluetoothFamily          4.2.0f6
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.kext.AMDSupport          1.1.4
com.apple.AppleGraphicsDeviceControl          3.4.12
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.driver.AppleSMBusPCI          1.0.12d1
com.apple.driver.AppleHDAController          2.5.2fc2
com.apple.iokit.IOHDAFamily          2.5.2fc2
com.apple.iokit.IONDRVSupport          2.3.6
com.apple.iokit.IOGraphicsFamily          2.3.6
com.apple.driver.AppleSMC          3.1.6d1
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.5.1d27
com.apple.driver.AppleThunderboltEDMSink          1.2.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.6.0
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.driver.AppleUSBHIDKeyboard          170.15
com.apple.driver.AppleHIDKeyboard          170.15
com.apple.iokit.IOAHCISerialATAPI          2.6.0
com.apple.driver.AppleThunderboltDPOutAdapter          2.5.0
com.apple.driver.AppleThunderboltDPInAdapter          2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily          2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter          1.4.0
com.apple.iokit.IOUSBHIDDriver          650.4.4
com.apple.iokit.IOSCSIBlockCommandsDevice          3.6.0
com.apple.iokit.IOUSBMassStorageClass          3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.6.0
com.apple.driver.AppleUSBMergeNub          650.4.0
com.apple.driver.AppleUSBComposite          650.4.0
com.apple.driver.AppleThunderboltNHI          1.9.2
com.apple.iokit.IOThunderboltFamily          2.8.5
com.apple.iokit.IOUSBUserClient          650.4.4
com.apple.iokit.IO80211Family          600.34
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOEthernetAVBController          1.0.3b3
com.apple.driver.mDNSOffloadUserClient          1.0.1b4
com.apple.iokit.IONetworkingFamily          3.2
com.apple.iokit.IOAHCIFamily          2.6.0
com.apple.iokit.IOUSBFamily          650.4.4
com.apple.driver.AppleEFINVRAM          2.0
com.apple.iokit.IOHIDFamily          2.0.0
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          278.10
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.AppleKeyStore          2
com.apple.driver.DiskImages          371.1
com.apple.iokit.IOStorageFamily          1.9
com.apple.iokit.IOReportFamily          21
com.apple.driver.AppleFDEKeyStore          28.30
com.apple.driver.AppleACPIPlatform          2.0
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com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.pthread          1
com.apple.kec.corecrypto          1.0

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IMac looses sound for 1-2 seconds when soundcard is idle for a minute

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