I just bought 3d world magazine and have been playing around with it. It requires registration (Free) after 3 months.
The CE stands for Covermount Edition.
It will export .x models but unfortunatley these don't contain animation. In fact the only save format that retains animation data is it's own proprietry .c4d format. Even 3d exploration can't read these so it's only good for static models.
The Licence agreement makes no referance to models produced using this software. I would assume that this means that you are free to use your creations as you see fit. If you're really going to sell your program/models, I'd check with Cinema4D by e-mail.
Hope that helps
Strings are PChars ??????? What a World