Earlier on someone posted that you’d loose your ability to watch movies on CD, like that Windows Media Center won’t play them anymore unless you buy an add-on package from some other company.
One tech site stated that Microsoft Media Center will not be installed on most versions of Win 10. Bet that will be changed not long after users get wind of it.
There are tons of players available for free that will play CD and DVD.
I use Nero for playing DVD’s