Getting my discs to play

Hello, ;D
I have loaded my disc #1 and can read all the file names. When I click on the first “.VOB” file I get to FreeFileViewer which recognizes the file name but when I click on ‘play’, nothing happens, the FreeFileViewer just sits there. Any suggestions?

The discs should play in any device that will play a standard DVD. Can you watch a normal DVD on the computer you are using?