STREAMLABS OBS HOW TO RECORD DESKTOP AUDIO!

No help at all

didn't help so much my audio thing shows disabled and there's no default option

there's no sound]

my problem is- I'm hearing my sound alerts from my desktop audio but also sharing my desktop audio to get game sound and discord chat in the stream but doing that now doubles my alert audio in stream. I'm not sure how to stop that from happening. New to PC