is is possible to make unity play whatever is in the disktray?

i want to be able to play films and stuff on a game that i have made in unity.

“Whatever” probably not, but if you know how to access the Disk tray location, you can try going through all files on the disk and see if you can play any of them in the game. Of course you also have to look into video playBack and how to actually do that in the game.