Not quite solved! Overnight I converted the .ts Foxy file to an .avi file through the AVS conversion program to reduce its size and to enable it to be played through Serviio on my Sony TV. The .ts version played OK in VLC on the PC but the converted .avi file wouldn't play . HOWEVER, the original file has now had the ENC symbol removed and there are the usual 4 symbols - HD, Dec, Indexed and OPT+, so presumably Unencrypt has finally worked overnight. I'm now converting this to .avi and we'll see what happens.