Original? I had the Roku Sound Bridge. It was purely for music. It hardwired to your stereo and could connect to your iTunes library by WiFi. You controlled it via a remote and the box’s display. When it worked, it was great.
https://images.crutchfieldonline.com/ImageHandler/trim/620/3...
Seems like it should have been part of the origin story, no?
I still have it actually. Someday I’d like to figure out if it’s possible to re-purpose it.