Quote - Lars, those found at Autodesk must be used with Autodesk software, it's in the terms of the usage agreement.

It sounds resonable, but I haven't been able to find such restrictions.

The Autodesk Seek TOS speaks of restrictions in distribution of the files etc. but not for personal use. And why would the Xfrog files be incorporated then, Xfrog is not Autodesk software, so as soon as you use those you'd be violating?