The Official Cambridge Guide To IELTS + IELTS 17 Academic

This book comes with QR scanner which means you don't need cd to hear the audio. Open QR scanner on your phone or install in from Play Store and scan the code that are giving on the sides of each listening practice.

The media could not be loaded. I order this combo, this claims that books with audio and received the books in good condition but didn't received the audio CDs along with the books. How it can help me with the listening one.