This is what I was told:
As an added benefit and to help you expand your computer software library, about every seven weeks after you receive your first set you will receive another specially selected four trial CD software set to evaluate for just USD$5.96 shipping & processing, as long as your account is active and in good standing. For each such recurring shipment, you will have the same full 25 days from the day you receive them to review all four trial CDs. If you elect to keep all four CD's in the recurring set, you will be billed to the credit or debit card provided the price of $14.99 for each of the four trial CD's. You can cancel your participation in this program at anytime just by visiting the website www.cdearth.com/freecd. There is no obligation and no minimum required purchase.
I tried to send it back but I was told it was that wrong address.