Michael
I Love YTtalk
I am doing it similarly then, I never lower my foreground nor raise it, the foreground always remains at 0db for me, I am unsure if you are meant to lower it at all, I certainly wouldnt raise it
What I tend to do is render it off as a wav once edited and then import that into Audacity and then normalize and apply a few other effects to it and the reimport back into vegas, add the music, make sure the music is set to at the very least -17 usually though it is around -18 to -22 depending on the music. I likely need to learn to read the db meters 
What I tend to do is render it off as a wav once edited and then import that into Audacity and then normalize and apply a few other effects to it and the reimport back into vegas, add the music, make sure the music is set to at the very least -17 usually though it is around -18 to -22 depending on the music. I likely need to learn to read the db meters 
No I wouldn't raise it. Yes it seems we are pretty much doing the same thing. Since I have different audio sources and I put them on top of eachother, I always need to readjust my foreground and background sounds to the levels I spoke of. I guess it depends on what kinds of vids you are making.