I had some luck cobbling together a HiFiBerry with some speakers. It’s not the same thing, but it does show up like a streamable audio device.

It’s not super cheap though.

Those are beasts! My homelab has three of them in a Proxmox cluster. I love that for not a ton of extra money you can throw in a PCIe expansion slot and the power consumption for all three is less than my second hand Dell Tower server.