I'm on Linux and [application] isn't outputting any sound!!! I have my speakers connected, [other application] works fine, but not this one
HELP ME! There's no sound from [application], but [other application] is fine! My volume is up, and it worked before, but it's broken now! (This phrasing is satire, essentially if you're experiencing inexplicable audio cutouts from some applications than this applies to you)
Solution 1:
Use pavucontrol. It's an application available on most distro package archives that allows you to individually monitor and configure the volume of applications. No sound? Chances are that application is, for some reason, muted. pavucontrol lets you check for and fix these issues.