As RSS feed is just a container with links it will create Nostr events with the same links to your audio. So you still can self host your music. At the same time if you are coming from Wavlake or dont like your hosting you can reupload audio and artwork to Blossom servers (Nostr Media servers).

Nostr Music is a standard for music nostr notes used by us, zaptrax.app, nodecast.xyz and nostria.app and anyone really as its open system.