i think the best option is DVD … to run quicktimes off a server is getting a lot more complicated and expensive …
you would need some sort of authoring software, like DVD Studio Pro or Encore, and just set that track to repeat when it gets to the end … you can make your animation seamless so that the repeat isn’t visible…
you could use DVD RW so long as the DVD player can play them ..
you could make a menu and put a number of different videos on the same disk