Hi @Andrea,
The original URL I used came from the jwPlayer dashboard. I am asking them why that is the URL and not the one you sent me. The one you sent seems to work fine as I can now play the video in IE11.
I am a new developer to this site so have no idea yet how things are coded and why for instance that player script is commented out of the code.
I thank you for your time and help in this matter.
Regards,
Dex