You do not need to download a spec to design your album in Zno Designer.
Zno Designer is a cloud-based platform that does not require any third party tool.
You can create an album or book using our Smart Layout or Storyline feature or existing drag and drop layouts. The only reason to use "Book Spec" would be to create a book in a third party design program if that is your preference.
For more information, please call 1-888-966-9539 or email support@zno.com.