Heya Mreith,
Many thanks for your interest in our library and welcome to our forums.
The library will work as it stands for Windows 8 x86. For windows 8 RT we would need to prepare a new build configuration. Although the API is identical to our Windows Phone 8 distribution the DLL needs to be built differently.
How soon would you be interested in testing an RT build and may I kindly ask if you are considering a commercial license?
Kind regards,
Marc