Been getting this bug for some time, got it when I started up a Praetorian Industries mission, this is on a new computer on fresh install
Given that your GSB install is fresh but you are clearly using modded content, this should have been posted in the relevant mod’s thread. I’m relocating your post to that thread in Gratuitous Modding so that you and Praetors can find the problem.
[size=85]Addendum: Looks like this is a known issue; Praetors has a potential solution for anyone experiencing this audio error with his P. I. mod.[/size]