Your laptop doesn't have a CD drive. The CD quality is often scratchy or low-bitrate. And searching for a proper download feels like navigating a maze of dead links and Reddit threads from 2015.
However, there is a universal frustration among learners. You buy the book, open the back cover, and find... a CD. shin kanzen master n3 listening audio download better
If the publisher’s page is down or you bought a used book without a CD, here are compared to random blogs: Your laptop doesn't have a CD drive
Do not listen at normal speed (100%) exclusively. open the back cover