You can listen and download the free mp3s that come with the books Mindful Hypnobirthing and Mindful Mamma by downloading them from the Penguin Random House website.
If they are unavailable on the publishers site you can download them from this page. https://www.mindfulmamma.co.uk/mindful-hypnobirthing/shop/
Please make sure you have then offline – I manage my own site and when things go down it takes a bit of time and brainpower to work out why!
Please note that if you need downloads support you should contact the customer support team at Penguin Random House.