Until a few months ago, these videos played ok in Firefox and Opera.
Then they stopped playing in Firefox
Now they don't play at all. Any ideas for a fix?
Use Google Chrome. It has Flash built in. Not Chromium. Until Firefox and other browsers start doing this it will always be a hassle and I personally prefer to get work done rather then messing with a browser plugin. I love Firefox, but I also have an Nvidia video card and the current Ubuntu installed Flash plugin has lots of issues. Also Google adds patches faster then Adobe at times.