Daap client. Eg rhythmbox or iTunes, the creatively named "DAAP" from fdroid, looks like there's a few for ios.

Owntone is great to drive your airplay speakers in your house (shairport-sync or whatever) daap client let's you stream that one, organised, curated, source of truth collection on the local network - which wireguard provides to you even when you're far, far away. Last.fm in you're into that (I'm not).

Better than any subscription service because it's yours.