Thanks for purchasing PRO, Steve.
There are two options:
1. Assuming you have all of your 360 product spins sharing the same settings (number of 360 images, hot-spots, etc), you can add path to your master xml config under plugin's General Settings (Master Config URL). This config file needs to reside on your magento server. Then create a new product attribute with the code webrotate_root and assign it to required product attribute sets. There you would enter a full URL path on the CDN pointing to the folder with the 360-degree product images for a given product (or relative path if the image folders reside on your server). The 360 viewer then uses relative image path in the master config xml and combines it with the folder path in webrotate_root, giving it a full image path on your CDN. This removes the need to have multiple configs per product even if you store the images on the same server.
2. If you have custom configs for certain products (various hot-spots, etc), use the original product attribute with the code webrotate_path to specify path to your product xml (residing on the same magento server) and then also add the root path to the actual product folder with the 360 images on the CDN as per above.
Please let us know if any questions. You can always email to support at webrotate360 dot com if any issues.