Audio downloads are sent as MP3s in Zip file archives. Zip files are extracted differently by different devices. For example, to extract files on a Mac, double click the Zip file; on a Windows PC, right click the file and select Extract All. Please consult the extraction instructions specific to your app/reader/device.
eBooks are sent as ePub files. The ePub file is designed to open in many different types of eBook readers: Nook, Kindle, GooglePlay, Kobo, Apple Books. Your device might automatically open the file in the application you have installed or might prompt you to add the application/reader before being able to install the eBook. Please consult the installation instructions specific to your app/reader/device.