Outputting Movie/Video from L8 in concert

[nz]

Hi,

We are running our band's backing tracks in Live 8 and want to incorporate video into our performances. In this, out thought is that along with the music we will have some video playing along with it in the movie window. This in itself is not a difficult thing. What we don't understand, though, is how to get that movie that is within Live to output to our A/V engineer so it can be projected to a screen in the back of the stage.

How can this be accomplished within Live?

Thanks so much in advance for any help with this.