I have now imported all the sounds into UDK and set up all three triggered events of my level. The door slam event has its finished sound. The corridor trigger and the sound of the wardrobe falling down the stairs ahead is finished. The trigger for the discovery of the wardrobe and unseen event is also done with the finished sound. There is one problem though and that is that the default sound of character's footsteps are to loud so I will have to find away of turning the volume down on this default setting within UDK.