Had audio (DTS/DOLBY/DTSHD), now have NO audio

Hello,

I have GUI sounds, and my kodi can play STEREO and will downmix FLAC to 2 channels. But I have NO audio for passthrough formats (DTS/DOLBY/DTSHD/DOLBYTRUEHD, etc.). Funny thing, is it worked last night, and all of a sudden is no longer working.

Any ideas?

Thanks