I can't confidently say that 8.1 store apps would be supported by the windows 8 library. Let me find out and get back to you on that.
In the meantime, you can get in touch with the Adobe sales team to give you a clearer picture. You can drop a sales inquiry here
I am happy with the content of the links you shared, but there i still one more confusion, will the library work with Windows 8.1 Store apps ? If no, what is the alternative to that. Also, how does a company get provisioned with adobe? What is the procedure.
Assuming you are developing for the mobile platform, I would suggest you go through the following documentation.
It would give you a clearer picture of how you need to go about integrating analytics with your app.
Please feel free to revert with any further queries.