For those interested – the partition its self is not encrypted – (unlike the HDR-10x0s units), however the file I think is I think, the media is on a .hts file and is unplayable by WMP (it hangs), or VLC player (which loads the file but cannot get any media properties at all from it and just sits there).
I have no idea if it would even play on another HB-1000S – I doubt it.
It is a freetime unit so freesat would have specified the same restrictions as other freetime units.
I have never tried doing this before simply because I expected it to be fruitless, as the manual implies.