When I created my Neocities, I was confronted to a problem: playing music on my site.
As you know, if you are not a supporter, you can't upload MP3 files.
So the solution seems obvious: host an MP3 file on the internet so that it has an address to refer to as "https://music.host/music.mp3".
It is however more difficult than you might think, I've been browsing for several hours without finding a single host that provides this kind of link or with the link easily guessed.
I finally found it! I will share my solution with you.
First, it's very simple, download the music you want to use.