does any one have any problems with the headphone jacks on this thing? Apperently for some reason on mine, both headphone outs have this high pitched whine to it. as soon as the music gets turned up a little it goes away but as long as there is no music playing i can here this terribly annoying sound. the reason why i want to know whats goin on with this is i plan on buying some expensive headphones soon, and it would be pointless to buy them if im only gonna hear this terrible sound coming out of them.