Volume mixer doesn't show BnS, OBS missing game audio

[greypony]

Tried to stream game with OBS and there was no game audio on stream, but system audio is working fine. Tried to mess with audio settings with no result. Other games work fine. Found out that even though I can hear the audio, it's not being detected by the system (???) and there is no icon of BnS in "Volume mixer" (Windows 7). It should appear there if app is playing sounds.

 

Anyone has this problem or know how to solve it? My soundcard xonar essence stx II