Audio Player Controls Help

I am trying to embed a few audio files into a website, and seemingly am very close to success with two exceptions. I am running into an issue when the audio player's native controls allow the user to easily download the file. Also, on mobile, a control to expand the player to full screen appears. My question is how does one customize the audio player so I can remove the download/maximize controls? I am using this structure in my HTML to achieve a basic player with the above issues: Thanks for any help!