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John, I agree it is not "professional", which is why I invested in http://wowslider.com/.

The Xara EULA is worth a read. It seems to have disappeared from the in-built Help but is here:...

John, yes, they are stored by Xara in their Space...

Acorn

John, this is a guess.
I suspect Xara may have used arcanery to embed the videos into your index_htm_files folder.

Export locally to a clean folder and open the index_htm_files folder to check if...