Fairmount is a free tool bundled with DVDRemaster which allows on-the-fly decryption of DVD content for convenient access.
Fairmount does not perform the actual decryption, it simply forwards the data to VLC Media Player, which is used for the decryption. Hence, VLC Media Player must be installed for Fairmount to work.
Mac OS X 10.4 or higher. VLC for Mac required.