hi mate
i have understood ur Q why u cant play other movies,
well we have different types of dvd formate,which some of them will never cover the dvd player.
or maybe the dvd player u got its only read VCD which is Video CD.
please read the formate which said on the top of the dvd player this will defently help you. as i said we got many different formates of dvds.
any question please ask, i am It technition.
Good luck hope this will help you fully.
Fahad, September 2007