Incredibly noobish question.

[Groundunit]

Edited from an original question of how to turn off Global Ambient Lighting... and this is the new question idk if its TOO noobish

How do I add music to my map?

[Tottel]

I take it you mean in the level editor?
There are 2 small buttons with a single letter in them on the bottom left of your screen. Put them both off.

As for the music: Look in the wiki, or the script recollection thread.