https://imgur.com/a/Pto9SRM
Here is two videos comparing the file and how it sounds in game
it started happening when i put that song as kiai, i tried redownlading the song but it keeps happening, i tried restarting my computer too, even other players hear it

Did this ever get resolved? I am having this same issue myself and idk how to fix it. it just wont go away no matter what the file is.

bump. curious if this is being looked into.

Looks like someone has previously marked this as elevated without actually leaving any sort of response.

This is a result of your sound file having 48KHz sample rate and SDL_Mixer 2.6.2 having some sort of problem playing those correctly.
Today's update on Steam and the standalone 5.65 release will use a newer version of SDL_Mixer which looks to no longer suffer from this issue, but if you still encounter this weird static sound please post here.