This is great, and it doesn’t have to be as complicated to get started. Here’s my setup -

• navidrome running in docker on my server (a NUC in the basement, with a copy of the library)
• tailscale to access the server from outside my home network (I run headscale, a self-hosted coordination server on a VPS, but the free company hosted default would be fine)
• Ultrasonic on my phone (I like the ability to “pin” songs or albums to keep offline)
• local copy of the library on my desktop which I listen to with Quod Libet

I cancelled my Spotify membership back in April and have been buying on average an album a month, either Bandcamp or directly from artists if possible. Bandcamp is also decent for discovering new artists, and I’ve also gone old-school and sought out music critic websites that cover the genres I like.