View the source of the page playing your video.
On line 420, there should be the URL address to the .flv file that you can download.
For example, these are lines 418 to 424 for one of my videos:
Code:
</div>
<a href="[URL="http://cdn.content.easports.com/media2012/fifa12/923391/492A0001_0_FLV_VIDEO_Ukc.flv"]http://cdn.content.easports.com/media2012/fifa12/923391/492A0001_0_FLV_VIDEO_Ukc.flv[/URL]" class="eula-accept" shape="rect">I ACCEPT</a>
<a href="#" onclick="" class="eula-decline" shape="rect">I DECLINE</a>
</div>
</div>
The bit you want is just under the EULA in the source.