theres this site which uses the jw player to play videos from many many different sites, like this link plays a video from rutube on the jwplayer:
http://www.mma-core.com/videos/_Lyoto_Machida_vs_Rashad_Evans_UFC_98?vid=10005048&tid=100
on the site it also the the jw player to play videos from dailymotion and vimeo, and alot more, any idea how to do this?