Been using VLC on my Xbox One for years. Last Saturday is stopped playing sound. I've uninstalled/reinstalled it a few times now with no change. The only time I hear anything is if I fast forward or rewind the movie or show. It makes a little blip of noise then back to silence.
XBox One OS: 10.0.18363.8131 - Which is current as of January 8th, 2020
VLC for WIndows (Universal) Version 3.2.1.70
Here's a link to a video clip: https://youtu.be/3Wj1PoXDcus