Hello.
Given the description of your task, we're looking at a custom audio player with some features of YouTube/any modern video player.
As a full stack developer with over 7 years of experience, I have the necessary skills to get this done having done several custom stuff using HTML, CSS and JavaScript. Responsive design is a breeze and functionality is my forte.
I am available to get started if this project is awarded to me and will be done under 48 hours as specified in the bid.
Thank you.