I use PayPal for secure payment by credit card. You do NOT need to be a PayPal member to make a secure credit card payment using this page. When checking out just click on the button indicating you do not currently have a PayPal account, and your credit card payment will be processed normally.
Each time you click on an "Add to Cart" button, it will add one copy of that CD to your PayPal shopping cart (which will open on a separate page). You can add additional copies of albums from this page, from the individual album pages, or you can use the PayPal shopping cart page to adjust quantities and make payment.