I purchased a beat, but I when I click on the link it just plays the beat. How do I download the beat?

Simply Right Click and Select Save Link As, and you will then be able to save the file to your computer

I purchased how basic lease, and would like to get the wav or premium lease, do have to pay twice?

Absolutely not, just use the contact form and let me know how you would like to upgrade and I will send you a paypal link to pay the difference.