and Nostr isnt 🤣

MP3 has something called id3 for metadata. m4a (aac) file have similar tags embedded. Most apps that you compress with will give you the option to add these tags.

ID3 - Wikipedia

Lol its only complicated in theory. Heres some screenshots from podhome.fm. you just fill in fields.

These apps should pull into straight from the audio track tags for DeMu. You could even add tags for lightning info in the file itself. Then tracks downloaded and shared could still have the info to pay the creator.

You could have Napster, but with lightning so the artist can still get paid 🤯