High Pitched Noise in Audio. Digital Noise

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http://askubuntu.com – (While the question is real, I've been banned and there's no feedback on why so this is a test post. Of course, posting a test post will likely get me banned. Catch-22 here, like the whole issue I'm having in the first place. I apologize for creating a duplicate thread, but I'm not allowed to add to other threads.) I'm getting a high pitched, highly digital noise: Here's a copy of the sound itself. https://docs.google.com/open?id=0B-z...VppTlZZay1UUVk It plays for 2/3 of the file then I switch the audio to 4.0 then back to 5.1 in the GUI. I've opened it as a bug at https://bugs.launchpad.net (HowTos)