Ah so they won’t be able to play it unless they have an app? Or just in the browser?

You would link them the RSS feed, not the individual files. Then any podcast app can handle it. Or any of the DeMu apps that will be built in the future. They would subscribe to your music feed.

Lnbeats or fountain depending on audience. I send normies to fountain and for the bitcoiners who's balls have dropped, to lnbeats.