Sketchy Physics to FBX?

did someone know a way to get a FBX-File from a Sketchy Physics File?

I mean this file here: steam engine James Watt | 3D Warehouse

If i try to export the Animations from the Sketchy Physics Plugin there are only this three possibilitys: Skp, Png und Jpg but no .fbx or something else.

I hope someone know a good way.
kind regards,