Commercially? Probably never happened. It is just easier to use more reliable formats like Dolby Digital or DTS (which is shipped with the print on CDs and sync

Commercially? Probably never happened. It is just easier to use more reliable formats like Dolby Digital or DTS (which is shipped with the print on CDs and synchronised using a timecode… some DTS units had HDDs in them you could load the soundtracks in to so you didn’t have to swap the discs over when you changed what movie was showing). Maybe it was different elsewhere, but SDDS was pretty much a non-starter for us for any kind of effort.