I want to create a CPT in which I will need three custom fields, one for a title, one for an image, and one for an audio file
and in the front end, I want that audio file to be playable like I can click to play the sound file or stop it
If this is the first time you use Meta Box, I recommend following the documentation to know how to create custom fields and display their value on the frontend. You also should have a basic knowledge of PHP, HTML, CSS code to use full features of Meta Box. https://docs.metabox.io/creating-meta-boxes/