How do you stop automatic modulation?

I would like to loop "Fly Me to the Moon" in one key, but IReal Book modulates it through the circle of fifths after each time through. How do you turn off automatic modulation?

There is a button that looks like a graduation hat (in the player controls) and you can set it up there.

I didn't know you could do that! How cool, I will HAVE to start reading the update docs... :-)