I just did an system update and after when I tried to watch a movie in VLC i got a warning box saying
" Audio Output Failed
The audio device "default" could not be used:
The video plays normally just no sound.
I tried several different types of movies and even a few Mp3 audio files but none worked. I also tried all other output options in the VLC settings with no change.
I also tried the same audio files with clementine and they played normally so Id say it definitely something the update did to VLC rather than a sound problem in general, I just don't know where to look.