He is sinful for helping them in any what facilitates sin for them.

Ya sheikh please help.!! A person helped his parents buy a tv.He also helped in the setup.Now due to the music and women the parents are watching thorugh the tv,is this person sinful?Should he pass the remote if he knows they will not mute the music? The parents want to watch movies through a hard disk that can be pluggee into the TV.Should he delete these hollywood movies