How to block CNN Live TV on their main web page.

When I look at a news web page, I want to read, I do not want a video to be playing at the same time that keeps distracting me (on the right side there is a window a little bit down the page).  Is there a way (I am using Mozilla Firefox), to disable this, and if I am able to do this, does this this prevent me from clicking on any video on any website?
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eelou --
I assume this video starts playing when you enter the site (as opposed to you clicking the big arrow).
Can't you stop the video from playing by clicking the ll (two vertical lines) button?
David Johnson, CD, MVPOwnerCommented:
get the addon flashblock

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