Comment by roryirvine

They started to be included by default for home PCs in around 1992, with the rise of Multimedia - PCs were advertised on the basis on being able to play 8fps 192x144 video clips from the Encarta or Grolier CD-ROMs that they were inevitably bundled with.

Before that, there really wasn't much else you could do with them other than games. The original Soundblasters were fairly crap - mono 11kHz 8 bit sound - so they weren't exactly hifi. There was better kit available for professional use from the likes of Gravis and Turtle Beach, but the price put them out of reach for most home users.