User blog comment:Aftenshnoshnikr/Attack On Titan's Tribute Game/@comment-91.201.18.101-20140929130330/@comment-11227880-20141009125821

I know this happened to me before, 1) your computer/laptops speakers are glitching and you need to restart your device

2) your speakers don't work, need fixing or something

3) *mine* you need to configure your volume 'mixer' by right clicking on the volume button and clicking on the one relating to something like 'open volume mixer' and mess around with the dials and scroll and options. I remember there was a slider increase/decrease for general window's sounds, for system sounds, Skype and then for some reason, a separate volume slider for my Attack on Titan Tribute Game Application (although my game version was downloaded)