[CentOS] trouble playing quicktimes at apple.com/trailers

I've been able to view the movie trailers at apple.com/trailers for years on my old Centos box (5.3).

so in July I built a new box and also used Centos 5.3. I recall being able to view them on the new box too, back in July.

now, none of them work on either the old or new box. Firefox by default uses mplayer for this purpose. mplayer starts up, says it's playing it displays the url on the screen for about a half second then stops. over and over again.

I should have all the right plugins since it's worked before.

Is anyone else having trouble with that? or to ask another way, can any of you still watch them?

Thanks!