ok, I know this is prolly a very noobish question but:
I cant seem to find out how I let music fade out at the end of my vid, with the video material you can just use transisitions, but how do you do it with music?
btw, I'm using Vegas 5.0
any help would be very much appreciated

PS, I also read some articles in the editing section, and I see alot of peaple talking about "keyframes", maybe if there is a quick explenation you could tell me what it means

(I know I am a noob)