Porting the Universal Windows DLL samples to a WinRT component

Question

I'm trying to adapt the Universal Windows DLL samples to a WinRT component for easier access (in addition to the fact that my project basically requires it for design and implementation reasons) and would like to have a few pointers on the best approach for doing so. I will be converting the samples via C++ and accessing the component in C#, with intent to utilize the THX spatial sound tools for which I have already integrated the respective splash sequence. Any ideas? (Note that I cannot legally interface via Unity or Unreal due to licensing restrictions pertinent to my development tools, and that I'm planning to incorporate the design elements for accessibility purposes. Also, I basically got the idea from the fact that I'm already using THX spatial sound drivers on my development system.)