Originally posted by: binister
I tracked the problem down to the Sound Out preference in the QuickTime Preferences...
My soundcard (SB Audigy Gamer) supports 24bit audio and sample rates up to 192kHz but if I select anything other than a rate of 44.1kHz and a size of 16bit it sounds like iTunes is trying to kill my speakers.
Scratch that... It is just the 24bit audio selection that is killing it.
fwiw, I have to change it to 16bit for it to play correctly.