Macbook Pro '08 - noisy headphone out

Hello - As soon as I got my new pro I have noticed that it makes weird noises through the headphones when listening in iTunes etc. The noises only happen when the song starts playing and for a second afterwards. The noises are like a constant low level static, weird high pitch sounds and glitchy noises. Pretty annoying really. Just wondering if anyone else has this problem and how they're dealing with it.

I recorded the weird noises: http://www.bluesalamand.de/noise.mov
What you hear: The System "Pop"-Sound from Mac OS X, played periodically.
Second 0 till 5: audio out in "sleep mode", silence
Second 5: First "Pop" played, audio awakes with dull "plopp"
Then, the "Pop"-Sound is played periodically, the werid noise changes everytime, randomly.
30 seconds after the last "Pop", the audio out falls to sleep with a dull "plopp" again, then silence.
This problem is independent of: battery / cable power WiFi / Bluetooth on / off, energy saving mode on / of, system reset. The weird noises are also independent of the current audio volume.
I now already got two MacBook Pros with the same problem! Why don't the fix it? I think it's a hardware problem, I don't wat for a software update
Greetings, NueX

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Macbook Pro '08 - noisy headphone out

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