How to add a file to /usr/lib?

Question

Access rights

Hello. I downloaded the crack of the Antares Auto-Tune plugin, wrote that it should be added to /usr/lib/a certain file. I'm sitting with a sudo user (admin), but I can't do anything there, it says no rights. What to do?
I'll tell you right now that I sudo chmod 777 /usr/lib/'ve already tried it.