Fixes Gungrave G.o.r.e media playback and hang on start.
I tested separately that setting an obviously invalid AudioSpecificConfig fails on Windows as well. On Windows stream attributes incompatible with AudioSpecificConfig (e. g., sample rate) also fails. We currently don't have such checks (and that will require fully parsing AudioSpecificConfig on our side), but since we don't have to choose between the parameters and only validate them I hope missing validation is not critical until we have something depending on that.