Help with Sam 3

I downloaded Sam 3 (Well 3.1 or something) I luckily have found a register code, I have registered it HOWEVER now it says even though have a registered sam Boradcaster it will still expire, it says I need to "download the unlimited version of this product" I click that link and it sends me to:
www.spacialaudio.com and there it has sign in. But Im not registered at it and I dont know how to, its under "Client". But like I totally dont know what to do?
Anyone help?
If it works fine I will give you +rep & a norm (maybe rare) on habbo.
Tysm

are you sure you have sam 3