I've been trying to figure out how to properly record sound with a program and was messing with various settings, but now I have screwed something up royally. I no longer can get sound using media player applications, whether it be VLC or something else. I get it fine on firefox and chrome. (edit: actually, it totally depends on the site. Youtube doesn't work.)
I've already tried everything in this guide:
https://itsfoss.com/fix-sound-ubuntu-1304-quick-tip/
The only effect is seemed to have is that now in the top-right there is no longer any audio icon.
Maybe helpful as a clue: Adjusting the normal Ubuntu volume bar no longer affects the volume of the sound in firefox at all.
Any help would be really nice. I'm in 16.04.
It suffised to go into Ubuntu sound settings and change the exit device to Analog headphones - Internal audio. Pretty obvious solution, thought I had already tried, apparently not.