How to make ambient sounds?

[Mr. X]

Hi there guys. Im just wondering how to make ambient sounds like music so the level isnt all quiet, shall i just place sound entities and choose sounds from there or is it in some options somewhere? I looked through all the sounds in the Sound folder but i couldnt find any ambient music!

So how do i place ambient sounds? :S

PS: If this is in some tutorial, ambient sounds that is, then please link. I have looked everywhere but i cant find anything regarding ambient sounds =/


Mr. X