Slackware 3.0, so must have been late 1995 to early/mid 1996. It was included with the book Linux Unleashed, I believe.
I recall having to rebuild the kernel to get sound drivers working (voxware, if I recall). I can’t remember if they were included with the kernel, or if I had to patch it. I followed the directions in the book, presumably including updating LILO, and it actually worked. I think that if I broke the kernel, there’s a good chance I’d’ve given up on Linux at that point, so good thing it worked first try!