Jumpy iTunes playback

Hi all,
I've been having some trouble with iTunes the past week or so - getting extremely jumpy playback, sort of sounds like a distant crackling or popping noise.

I've turned off all my applications and even ran 'top' in terminal to see if I could have been low in resources - no luck.



I'm running on a practically new 1.25ghz powerbook with 512mb ram. This is quite annoying. I've checked my speakers also - and they are not at fault. Any ideas/suggestions would be much appreciated.


-- Andrew.

 

I actually think it could be the soundoutput on my powerbook - I'm getting the same problem with audion 3.

I havent noticed the problem with dvd playback.