Hello again Oliver,
Thank you again for your assistance and reply.
I tried to find an "autoplay terminator" on Opera but did not find anything because most of them are about Youtube.
Nothing about DM (DailyMail.co.uk) !
To read DM, I will follow your advice by switching to Chromium or Chrome, with a heavy preference for Chromium.
I will let you know about my user experience with this McAfee extension.
Again, thank you for your concern.