Emby for Android on Shield TV no longer passing through dolby digital 5.1 or DTS

[Kramerika 18]

I am not sure when this happened, but Emby on my Shield TVs is no longer playing Dolby Digital AC3 2.0 or 5.1 or DTS 5.1.  I get no sound.  I have to use the Playback Correction to get any sound.  We watched a DTS movie just a few weeks ago that played fine.  The audio is set to Auto in Playback, but I have not touched any settings in a long long time.  This is with two different Shield TVs, one connected to a Sony receiver that supports all of those codecs and another sound bar that does the same.  Any advice on how to get it back would be appreciated!