It is continually stopping on my PC.  In fact, Firefox frequently stops responding and takes a while to wake up again.

After looking at a video embedded in an article I've opened from my E-mail, and then attempting to read more text below the video window, the video appears in the lower right corner of my display screen and I can find nothing which will close it. There is a small, boxed, right inclined arrow in the upper right corner of the video which, when clicked upon, clears the image in the lower right corner of my display screen & opens a conventional appearing window in the middle of my display screen, titled "Tout Player" with the same content as the smaller video just cleared. When I click the "X" in the Tout Player window, that window does close as expected. However, the smaller video image reappears in the lower right corner of my display screen. Either window blocks part of the main article text which I'm trying to read. The content of the Tout Player must be active at times without displaying the small lower right corner video because often after viewing a video in the main article, I'll hear a soundtrack (about some other video, or an advertisement) which I cannot locate its source and cannot turn off. What are the Firefox (or possible my PC) settings which control this? Thank you in advance for any enlightenment you can provide. ArnoldRD P.S. I know it's off subject, but while I'm here; isn't there SOME PROGRAM OTHER THAN SHOCKWAVE with which to view videos? It is continually stopping on my PC. In fact, Firefox frequently stops responding and takes a while to wake up again.