https://tipsmake.com/fix-audio-problems-in-the-computer
Fix audio problems in the computer - TipsMake
No sound; before there is sound but now lost; before listening well but now it sounds bad or deformed; audio still plays from files on the hard drive but not...
fix audio problemscomputer
https://support.mozilla.org/ne-NP/kb/fix-video-audio-problems-firefox-windows
Fix video and audio problems on Firefox for Windows N editions | Firefox Help
If Firefox has trouble playing video or music on a Windows computer, you can install the Media Feature Pack, if it's missing. Learn more.
video and audiofor windowsfixproblemsfirefox