[Plugin: Easy Video Widget] Needs Flash plugin?

I just installed the Easy Video Widget and am attempting to use it with Vimeo videos, but when I tried to load the page, the videos won’t display. Instead I got “Flash plugin required”. I tried installing “Flash Video Player” but that didn’t seem to help. Not sure that that is the correct supporting plugin or not.

http://wordpress.org/extend/plugins/easy-video-widget/
http://wordpress.org/extend/plugins/flash-video-player/

Thanks
~ Heather