https://bugs.winehq.org/show_bug.cgi?id=50779
--- Comment #5 from Rafał Mużyło galtgendo@o2.pl --- Well, then...
So, looking a bit deeper into things, I must once again admit I hate all the obfuscators.
In this particular case, executable compressors.
So, main lib does carry some code to read ogg files.
Though, given that the problem happens even with winegstreamer disabled, it just means the problem happens somewhere deeper in the stack. As of now, I've got no idea where.
It's still is related to playback of those files...