TS2090 Apple TV mirroring - sound problem. Tried everything. It's ****.

I'm feeling totally exasperated. I've tried every 'solution' to the inherent Apple TV mirroring sound problem. Why don't Apple just fix it?? All I want to do is be able to view my computer video with sound when i want to. I don't feel that I should have to spend up to and over an hour trying repeated combinations of turning things on and off, entering code into Terminal, etc. EVERY TIME THAT I TRY TO MIRROR THROUGH APPLE TV. It's ridiculous, aside from the cost of buying the unit, I had to upload Mountain Lion despite the fact that my new (Early 2012) imac should have been on spec. That took hours and it still doesn't work. Very dissappointed, Apple have lost my brand loyalty for such an obviously fixable thing. ( I don't think that they read these comments). hope this makes you think twice before buying.  Yours, m

I found a fix for this problem thanks to a friend of mine who I can only assume did a little research online!!
The problem I had was having AirParrot once installed, and after the recent 10.9.2 update, the third party app messed up the way Mirroring was working..
Here is the fix:
1. Open Terminal in /Applications/Utilities.
2. Run these commands respectively:
sudo rm -rf /System/Library/Extensions/APExtFramebuffer.kext
sudo rm -rf /System/Library/Extensions/AirParrotDriver.kext
sudo rm -rf /Library/Extensions/APExtFramebuffer.kext
sudo rm -rf /Library/Extensions/AirParrotDriver.kext
This will uninstall kernel extensions related to AirParrot. Other solutions around the web being posted are missing the extensions within /Library/Extensions.
3. Enter your administrative password when prompted.
4. Restart your computer.
I tried it once again and it worked like a dream!!!
Here is the article for reference:
http://9to5mac.com/2014/02/28/os-x-10-9-2-breaks-airplay-mirroring-and-desktop-e xtensions-to-external-monitors-for-some-users/
Many Thanks for all who tried to help, and especially Wasim!!
Hope this helps anyone with the same problem in the future!!

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