This is possible to do. You can set up the tracks one after another and create markers at the beginning of each song. You just need to make sure to change the tempos at the beginning of each song. Using Ableton Live, playback in MainStage, or PRIME would be much easier though.
-Derek, The LC Team
Yeah, I had the ableton trial and I've been using PRIME since that expired but I wanted to try other things as well because PRIME doesn't do something things exactly as I'd like. Is there somewhere I could find some instruction on MainStage? Chances are I stick with PRIME but I just want to do some exploring. Thanks.