Tried absolute URL and same result just a black box.
One thing that would help in the short term is to be able to specify
an order of precedence for the players when using Plugin.Auto
For me I would like to have the supported player chosen based on the
following order
1) HTML 5
2) Flash
3) any of the others.
Since Flash is installed as a plugin on many browsers it seems logical
to try that one before the others.
For now, I guess I will just do that programatically by trying to
create a Flash player first (Plugin.FlashPlayer).