what is tone? curious on how you set up the rss feed ingest as well if you would be open to sharing.

return of the clippy, now named skynet.

As others suggested, a simple server with a subsonic api is all you need. tailscale on it and your mobile device and you can stream with a handful of open source apps.

I am using a pi to server my music for years but been self hosting my music since google music died - never got on the spotify bandwagon.

A little docker/podman is all you need. I also work on an free android app for this purpose as well that I just posted an update to yesterday.