Here's a work-around for your DVD problem!
Is this your problem?
"Whenever I try to watch a DVD with "DVD Player", and AirPlay is enabled, the video displays a black and white checkerboard graphic rather than the actual movie. How do I fix it so I can watch DVD movies via AirPlay??"
Dave Taylor has a great walk-through of the reasons for this, as well as a solution that is easy to implement: try "VLC Media Player"! You probably already have it on your laptop. (See his full post for all the details)