I have an ASUS K53S 8GB RAM running windows 7 64bit
And I have the exact same problem! The tearing in that clip is a very small amount of what I am experiencing. I have also tried updating every single driver i could find. And they were all up to date anyway.
Possibly we can hear it but freberd can't because its not the clip with the tearing it's when we play the clip we get the tearing.
I get this tearing when doing absolutely anything, windows startup, skype, steam chat, gaming (dota 2, starcraft 2, dead island, CSS), you tube (only >= 720p), itunes plays fine ALTHOUGH when i do something else while music is playing, like open eclipse or netbeans or open a new web page (chrome) i get large tears in the audio.
It occurs with the built in speakers, external speakers and also a regular (non-usb) headset.
It's not ONLY when i'm online...
Because of this I have a feeling that the tearing occurs when the processor spikes. I'm not sure how to test this or show why. Will try to record an example or maybe video the spikes in processing power and show they match with the tearing.
Please help! This is starting to FRUSTRATE me.