1) Is X Windows starting for root but not for a user?
2) The movies have to be in a directory accessible by user. You do not want to give a user access rights to roots home directory if that where you put them.
What I did was create a folder (as root) such as
set the permissions using
chmod 755 /usr/allusers
Then you can put whatever you want in the directory and all users can access it.
If something in that directory gives you a "permission denied" error
just do a
For more info on file ownership and permissions see here;