To test the rss in a podcast app: https://nostr-rss2.puhcho.me/npub1u4x0m5grq47ahu42tmdtjq9pak7gsgz68uw2lagu44stn6rt2v7qnzgmhv (this can be plugged in most podcast apps, change in code to your domain feed url). The add of rss feeds does not require apps login (fountain can use some npub). In general self-host https://github.com/SnowCait/nostr-rss and it can use nostter client or you can change the code to nostrudel, nostr band, coracle etc to pull rss of notes. If the notes have a direct media link in content or tags for certain events (for flarepub, wavlake, zap stream etc), that turns any pub to podcaster and will be played in the podcast apps if enclosure url is in. pubcastr.puhcho.me