That fixed it. Thank you so much. Will that affect anything else, if I leave it off?

yes

It buffers for a long time, then I get "Problem connecting to server. Please click to try again" message. I'm running Opera 33.0. It plays in every other browser.

I subscribe to books from Amazon that are read via Audible.com. They do not play in Opera. I cannot find the version I'm using, but I'm sure it's the latest, and I'm running Windows 10. Any ideas to resolve this out there?