Yes, I have made all the changes that I think are necessary, even copied the noguest directly in and just changed 'noguest' to 'media'. It's a neat mod but overall it's rather confusing, what I am after is taking my custom bbcode [media] whatever.com [/media] and making it so guests cannot see it. I find myself reading the documentation over and over but there are too many variables (uses) so I am not sure whether I need to add stuff, not add stuff to certain sections or not. I have tried many variations and none have worked.

Well nothing will go wrong if you do all optional modifications. I tried to make it less work for those that are not so happy with too many file edits, but i can understand this might also make things confusing.

Did you make a new post AFTER all the file edits?