Ability to associate groups with specific content types

Hello,
Thanks for the excellent module.
Perhaps I am missing something but I can't achieve the following functionality.
I have two content types for groups: Media groups and Profile groups.
I want to associate Media groups with Video, Audio and Image content types only.
I also want to associate Profile groups with the Profile content type only.
Right now, I have the following Organic groups usage:
Group node for Media groups and Profile groups and Standard group post for Video, Audio, Image and Profile.
It seems I can't associate groups with specific content types.
Is it possible to achieve this functionality?
Thanks in advance.