How does that work? The website mentions paying extra P£P per CD.
No idea. I take the PayPal route (but could also do the Visa card instead) - my Australian address details pop up automatically, because I'm a regular customer, and have been verified via PayPal - and the site calculates the postage to Australia.
Not sure what you mean by "per CD", but yeah, overseas customers will always pay "extra" postage.