I added the feature the other day that Bjorn wanted. Now parameters to the media url get mapped to variables in the various parts of the template.
e.g
<a href="http://bigvideoboomboom.tv/funny.mp4?color=green">Funny Video</a>
Would map to a variable @@color@@ in the template and could be used to make the player color customizable from each video url.
At the same time I also added course id and course context id variables. Respectively these are:
@@COURSEID@@
and
@@COURSECONTEXTID@@