Prince.harry-spare_2023_audiobook.en.m4b-prot -

: This is a standard file extension for audiobooks. Unlike MP3s, M4B files support bookmarking (remembering where you left off) and chapter markers .

: Confirms the format is an audio recording rather than a text-based e-book. Prince.Harry-Spare_2023_Audiobook.EN.M4B-prot

This text appears to be a for a digital audiobook version of " Spare ," the memoir by Prince Harry, Duke of Sussex , published in January 2023. Based on the naming convention, : This is a standard file extension for audiobooks