I have the SixAxis app, but I've never had to use it with this tablet; PS3 controllers will work through USB with no additional software required. The only need for it would be remapping, and come to think of it, I'm not sure if you can remap controls in the SixAxis app without it being connected via BT... I've never tried.
Oh, and damianiw, you might wanna check your signature... judging by the "Sent from my TegraNote-P1640" in your post, you're no longer "soon to own" one of these
Welcome to the club!