Without getting into too much detail...
Without getting into too much detail, the only available answer is to buy licenses to cover the software being used.
Otherwise, you'd have to figure out:
a) who uses the software
b) who needs to use the software
c) is it the correct software for their use
d) who is responsible for tracking installed software
e) why aren't they doing their job properly
It isn't possible to answer your question properly given the information you've provided. Talking to a rep is a good way to ensure that you'll spend the most money possible to solve something that may not even be a problem.