we have a similar way to communicate with our cdn.
we use a prprietary pkugin that is based on loadfromdocument element.
we also use it to handle mb streaming with smil. to do so you need to set media and mime types correctly when generating secondary resources.
you may want to study a smil plugin source itself. that is a kind of loadfromdocument element.
Do you have a working example that you could share? It will be awesome if you could. Thanks!
i can not do it right now due to i have no access to my work svn
but you could take a smil plugin source as a reference. we used it to create our parsing plugin.
so i doubt you will learn anything more specific from it because although xml looks similar it is a way different from jw player.
however if you still need it i can send it to you on monday.
That would be awesome! Thanks in advance.