there is an Intel C# UPnP MediaServer sample. the problem is its using an older version of the core UPnP library, it doesnt look like it was bootstrapped using the Device Builder code generation, and it uses a number of other undocumented tool DLLs ... making it altogether different than the framework i've been using.
forgetting that option for now, and looking back at further modifying the core UPnP library isnt without challenges either. sending a dummy
did get the code working for container and item browsing. it shows the available pictures, but then it begins to request those images for display and fails for the reasons above. not sure how i'm going to proceed yet. at this point i really want to hear from Intel. their library looks to be real close to what i need.