We moved past purchasing or renting digital media like we did with iTunes, but there are some movies I still own from iTunes era. The movies and TV shows are still available on the TV app for macOS and iTunes app on Windows. As a general rule, once purchased, purchased contents are often not updated with the new subtitles. While understandable, it is ironic buying a movie somehow has worse consequences than pirating a movie.
Tagged iTunes
Customize macOS Media Key Behaviors
For better or worse, it appears Apple is pushing the media key to be more universal through out its platform. iOS already comes with unified media control on its control center, and it seems macOS will quickly follow suite. It then becomes the matter of how to streamline a control center of sort for Mac.
When iTunes Home Sharing won’t appear on iOS
iTunes will ask for your credential soon after. You should be able to see iTunes libraries on your iOS devices as well.