Place a transparent png over mplayer on Firefox

Hi guys. I've been trying to place a transparent png over a video
playing on Firefox using MPlayer and Ubuntu 9.10.

I tried first to put a transparent div, but it doesn't transparent to
the video but to the body background.

I've already tried options like the <video> tag and codec support on
Firefox 3, but I need to play mms videos, video streaming in that
format, and Firefox doesn't support mms.

Here's a screenshot showing that it doesn't transparent the video.
http://i.imgur.com/jUFeC.jpg

Do you think that the mplayer plugin needs some kind of hackery in order
to support this? is it a x.org/framebuffer issue?


Thank you so much!


Juan Pablo.


------------------------------------------------------------------------------
Throughout its 18-year history, RSA Conference consistently attracts the
world's best and brightest in the field, creating opportunities for Conference
attendees to learn about information security's most important issues through
interactions with peers, luminaries and emerging and established companies.
http://p.sf.net/sfu/rsaconf-dev2dev