You’ll need two files: keys database and AACS dynamic library.
get the file UPDATED 19-03-2017!
Windows: put it in C:\ProgramData\aacs\
Mac OS X: put it in ~/Library/Preferences/aacs/ (create it if it does not exist)
Linux: put it in ~/.config/aacs/
AACS dynamic library
VLC 32 bit on Windows: put that file in your VLC directory
VLC 64 bit on Windows: put that file in your VLC directory
Mac OS X: put that file in ~/lib directory (create it, if it does not exist)
Linux: install libaacs package using your distribution package manager.