u can use all kinds of plugins ...but dere is a simpler way......just use opera...increase ur cache size...watch the streaming flash video..just go to ur partition where opeara is installed...say j:\program files\opera 9\profile\cache4
now dere u`ll see .tmp files starting with "opr"..ost vids are abt 7-12 mb in size...just drag onto vlc or mplayer and enjoi...