No, this guy at least isn’t speaking Norwegian. Sounds more like Finnish.
You are probably thinking of apetor, who made some crazy videos, often involving vodka and swimming in icy waters. He was Norwegian and died a few years ago. I don’t think this is him though.
I tried Volumio recently, and was prepared to maybe get the paid version if it was as great as it seemed. But the user interface was so god-awful! Absolutely unusable for me. Would never pay for it.
Instead I googled a bit and found Moode - a million times better, and free. Don’t remember if it does multiroom audio, but personally I don’t need that currently.
They work great together. I have jellyfin as my media server / manager /backend, and kodi on my nvidia shield connected to my TV as my main media player / frontend. In kodi, the jellyfin plugin syncs all metadata from jellyfin to kodi’s library, and streams the media from my jellyfin.