The concert that you posted is too complicated for what you want to do. Otherwise, the related patch or set has to be selected in your patch list for the play button of the displayed playback to be activated.
What is the version of your MS ? The Appstore one or the Logic Studio suite one ?
On youtube you have many tutorials about the use of the playback. This one is in three parts and well explained :
MS 2, the one packaged with Logic Studio, not off the App Store.
I was able to better figure out what to do last night although it was a bit cumbersome to have to add the track and populate all the UI elements for each patch. I am up to 15 patches on 2 sets now. The only problem is that it seems like they might be more complicated than necessary. I would think all I need a bus1 track for me, a bus 2 for a 2nd instrumentalist, and a strip for the backing track. I'm not sure what all the extra tracks are.
Just an update on this. Last night I decided to start with a blank project and just created elements to play the backing track and control the levels/effects for the line ins. I got the spinning beachball when working with a simple 2 track project and 1 backing track. Additionally, as I want to add more tracks to my concert I have to go in and assign all the controls for the new track. This seems really cumbersome. I spent hours yesterday working on this and was thinking I could just use iTunes to play my tracks and use an external hardware effects unit. Do any big names actually use MS?