Yes! Oh my God, I thought that was a uniquely Australian thing because my partner from the UK had no idea what I was on about. But there was like 2 years in highschool for me where everyone was obsessed with the fitting 3-4 songs on a minidisc.
Though it helped that you could get actual, good music in cereal box mini discs prizes. I got a Missy Higgins single and played it to death. I want to say it was Sugarcane, but the year doesn’t match so it had to have been Scar or Sound of White. (it exploded in our PC disc drive, mini discs were great at doing that) I don’t even remember the song.