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To play a movie from a HD, the device must have the necessary decoding software. Since Sony most probably didn't build it into the electronics of the TV (and all other mfgr's too) then you're not going to be able to play directly from the HD. Your best option would be a computer/laptop with HDMI out to feed the TV. You could then download the necessary codec (Code/decode) from the various sites.
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If there are lawyers or politicians involved, logic may be a very poor tool for reaching a conclusion.