Sound Bug (Start with 1.7)

I tested the beta of 1.7 and had this horrible soundbug , and it's still here with the official maj (when i move up and down or all moves with keyboard) the only moves that don't affect the sound is look around with the mouse. It's always and always still there, when i play with my integrated soundcar or with my external soundcard (i'm on a portable pc). My brother on an another portable pc don't have it but on the forum lot's of people shout about this bug ... need to fix this quick so.