Music seller tutorial?

Hello, I’m a music creator. I sell my stuff on Bandcamp, I’m on YT, and a couple other places. I’d like to sell some of my work on the Marketplace here as I think some people would find value in it.
I dl the engine, installed - now what? I am supposed to use this to generate a “cue” file but I’m not a developer. Is there a tutorial on how to do this for us simple musicians? If not I’m afraid I will have to pass on participating in the marketplace.