Song Cover

I am trying to do a cover of Foo Fighters "Monkey Wrench" with two other people. There are 4 total tracks, but I am having a really hard time getting them to line up with each other (each person recorded their track separately, therefore they each have different times). I use Ableton for editing the audio and Windows Live Movie Maker for the video. Any suggestions as to how I should go about this? Side Note: I am a beginner with Ableton, just sort of figuring things out on my own. If anyone has any tips please let me know. Thanks!