I don't think I have explained the problem properly. I'll try again...
When attaching a usb key with a ts file on it to our samsung television, samsungs own media player successfully plays the ts video file.
We then made the same ts file publically available on a http server. We added the url of the file to our video widget which we sent to you to put on our development area on the tv. When launching the video widget and pressing the button to start the ts video file playing, it did not play.
Any ideas?