I am sure it was released with the sound track and then the sound was removed when it was notice that Gerry used a naughty word. You can hear a lot of background noises that seem appropriate to the situation. If you look at the news coverage of when it was released there are a number of outlets that would probably have shown the video that just either refer to it or have a still photograph from it. Why would they do that when to show Madeleines last video would have been so much more powerful.
Here is the one I was watching https://www.youtube.com/watch?v=p1AlT1Jg0fw
You are absolutely correct Sunny. If this was to be shown on TV the sound technicians would dub over or remove all or part of the video. They would certainly not allow the words ' FO' to be heard by the viewing public.
However, I have my very own evidence which convinced me and others. We have a sign language /lip reading expert translator . Asked to look at the silent video,it was slowed down, and she wrote down what was said. FO was what was said. I trust her implicitly. She sympathises with the family so no bias at all.
I also know this to be true as I have other information from someone in the know. I am doing a Sadie and Davel here -NO not going to name names...