I have the same problem and it is a sad day when Samsung is too lazy to add additional support for all audio formats. I did find a workaround for those that love their TV with this one exception of the sound issue. If you have a laptop or computer connected to the same wifi network you can use Plex to watch the movies. here is a tutorial. First Step - How to install server on Windows- https://www.youtube.com/watch?v=M33Tr2cGX8M OR How to install server on macOS - https://www.youtube.com/watch?v=Z2rU8T48QQ4 Second Step - Connect your Samsung Smart TV to the plex server via the Wifi network - https://flixed.io/install-plex-smart-tvs/ I hope this helped.
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