Why do you want to do that? It would be easier to connect your phone via something like Apple TV or the Windows wireless display Dongle. If you have an Android, I'm sure there are lots of third party equivalents.
Yes. Almost all Blu-ray players can play standard DVDs. There may be regional issues though, if you are trying to use DVDs from a region that is different from your...
If Media Player is not responding, it's not going to do anything for you. Try restarting the program, restarting your computer, or if nothing else works, uninstalling and reinstalling Media...