hehe. check your PM's
think about this player like any other div. you can clip it with parent div
oh and i've just noticed that flash fallback in jPlayer don't play video during download (mening old browsers without html5 support will have to download entire video prior to playback). not very bright perspective for you.
workaround: divide your video into small clips and make them into a playlist. then start downloading piece when previous one starts playing