I’d like to draw attention to this topic again, as there is a new sound card: https://www.hifiberry.com/shop/boards/hifiberry-digi-io/
My LG Tv allowes (good) Internal speakers and Optical digital output at the same time.
Would be awesome to integrate that into a max2play multiroom (my kitchen has a see through) system with digital input. (or all other kind of digital Inputs, e.g. turntable, Xbox, set-top-box by TV company..)
Maybe there is a bigger market oppertunity than just me.