Good to know, thanks!

I’m not sure about self hosted specific. There is a device called WiiM. Works with most of the major streaming services. I believe they’re also working on plexamp integration too.

I’m guessing the author is getting some kind of referral to send them to that other site that hosts grafana. Because home assistant has a 3rd party app for grafana built in. Granted it would be a few more steps than they outlined, but it’s also not sending your data to some random company.