Yes, I remember, speaker.drv. there was also one for win 3.11. I have fond memories of squeezing Windows on a bootable 2M3.0 floppy with UC2 compression and ramdisk to use it on the dos machines in university
Searching for that filename returns some very nostalgic websites. Here's one[0], which refers to speaker.drv as a way to play audio in NCSA Mosaic. It links to SPEAK.EXE on ftp.microsoft.com; incredibly, the URL[1] still works. The page must be about 20 years old.
