Re: ummm... run away!!!!
just dont think about the audience, channel them out so all you notice is the the music, the band, and the director.
In university, they did things to get this out of you constantly. first we wrote down all the kinds of things that bother us when we perform, and it went from slamming doors, crying babies, talking, just people watchin etc and the we discussed this.
Then the fun part, we did this to eachother in studio practices all the time. And I had a professor who when I did my juries, would jingle his keys off tempo and beat, and another who came and leaned on my shoulder.
Just teach yourself to channel these things out of yourself and you'll be fine. I still get butterflys just before I hit the stage, but after that Im performaing and its fun time.
Barisax((( is also spot on, breathing right, just like we do the rest of the time helps immensely