What exactly do you mean by "take"? In MMM, "take" has a specific meaning (a saved version of an altered sample). Or, do you mean a saved arrangement (project)?
A "take" is a MMM file with the extension ".tak". Earlier versions of MMM have come with some takes already created. Perhaps MM-17 does not, but it sounds as if you are able to create them yourself if you wish.
Oh...and to answer your initial question, you can load takes (assuming you have any) in the same manner as any soundpool object.