Yeah MOD's and S3M's were my bread and butter in my BBSing high school days, circa 1991-1994. Me and my buddies strung together some cool techno/rap S3M's in our copious spare time.

WinPlay3 was an absolute dog, didn't support long filenames, and was uglier than sin, but it was the first piece of software that I took one look at and said "this kinda thing is gonna be huge if enough people find out about it." I wish I was smart enough back then to go register the MP3.com domain or something like that, but at the time, my main concerns were chasing women, consuming large quantities of beer, and trying to go to enough classes to maintain passing grades.