Quite inexplicably, all sounds in my game (Unreal Engine 4.15) start producing the notification that "Sound could not find a path to an output device, will use virtual voice setting.", and are will not play (or at least, not audibly) if I don't have the Rift headset in use.
When I put it on/take it off, it notifies me of the audio thread being resumed/suspended respectively, and resumes/interrupts the audio accordingly.
Anyway know how to make it behave in such a way that I can audition my game even without the Rift headset on?