ATV - 'Crackling' Audio

I recently acquired an ATV with the v1 firmware. After setting it up via HDMI and syncing with my iMac iTunes library everything was dandy and enjoying my music. Yay. I decided to give the 2.0 update a go & after installing I now experience 'crackling' audio. Almost like when to turn something up too loud and it distorts and blows you speakers up. It happens regardless of source(steam/sych'ed) and media(music/podcast/youtube).
I've double checked my cabling, reset user settings & rebooted. Nothings really helping? Any suggestions? Thanks in advance!!

I am having the same trouble via the HMDI input to my receiver. It clearly sounds like "Digital Clipping" on the peaks of the audio.
What is rather strange is that I have not encountered this on any Movie (local or rented), YouTube, .Mac galleries.
It seems to be only the Music and even occurs when I listen the song off of the ITunes store. For example "Before He Cheats" clips severely in the loud parts on my local copy or playing the very same song off of iTunes, on my Apple TV. No such problem when listening to the same tune on my Macbook or Macbook Pro.

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