I sent a support ticket to Nanacast and got this reply....
Nanacast can integrate with the warrior plus system.
To accomplish this you would use the inbound API to create subscriber records. In general, in a case of using payment processing that is positioned upstream in the process from the Nanacast part of the process, you'd use our Incoming API to receive client data from the payment processor software to the Nanacast offer.
You can find documentation for the inbound API from the left menu under Advanced > Incoming API.
However, note also that since Nanacast can handle payments, delivery, and affiliate programs already, plus a lot more, it's not necessary to use a 3rd party system ahead of Nanacast... you could simply use a text or image link to a Nanacast offer and handle everything through Nanacast.
It look like you could integrate it with wso pro but i think i would need to hire a programmer??
Anybody tried this before??