The iTunes Affiliate Code allows you to be paid for iTunes purchases made via your radio website.
Here's how to retrieve your affiliate code and enter it onto your website.
SUBSCRIBING TO THE ITUNES AFFILIATE PROGRAM
To get started, you'll need to create an account on the iTunes affiliate program page. You can do so HERE, simply click on Register (or Sign In if you already have an account).
Enter your personal information and click on Continue.
You'll then need to fill in your profile information.
Once completed, you should eceive an email within 5 days if your registration is accepted.
Now all you have to do is copy your Affiliate Token.
Once you've got hold of your Affiliate ID, head over to your website's admin panel: Configuration > General Settings > External APIs
Insert your Affiliate Token in the field: iTunes Affiliate Code
Once you are registered a confirmation message will appear.
When you are done, you will receive an email within five days which will confirm wether or not your registration was accepted.
Go on in the administration of your Radio site. In General Setup > External API.
Insert your ID into the field concerned.
Don't forget to fill in your bank details by logging into your Affiliate account as indicated in the email.