The original instance of this site at gemini.tunerapp.org was shut down by its author, Louis Brauer, some time around June 2021. In a mail to the gemini mailing list, he suggested someone fork it... so that's what I've done.

Thread on the gemini mailing list about gemini.tunerapp.org

I don't know if I plan to keep this up long-term, still less maintain the code, and I can't promise great uptime. So if someone else wants to fork it too, they should go ahead.

Hint for any diohsc users: `alias Tune at ^Stream br mpv` creates a command Tune which will play the stream at a station page.