When does that happen and how can I reproduce it?
Any mod, and it's fairly random. You simply go through command brief or briefing pages until you get it. But if you go to the next or previous page and come back, it doesn't occur a second time. It's been present for a very long time- since even before .ogg implementation- with both onboard sound and my Asus Xonar card. I think I even made a Mantis ticket for it way back when, but I strangely seem to be the only one getting this; nobody else I've talked to has noticed it. The symptoms are fairly similar to the .ogg cutscene issue in which, apparently, .ogg cutscenes over a certain filesize have their audio restart after a couple of seconds while the video continues, thereby desynchronizing the audio and video. I've contemplated FRAPSing until I encountered the error but that would require far
more disk space than I have available.