I had a cable modem back when the Dreamcast came out and so my friends and I were downloading all the ISOs we could find with little regard for recognition or quality. Guilty Gear X landed a lot better than the Lodoss War game or Tokyo Bus Driver or Sengoku TURB!
A couple years later we'd actually get an XX machine at an arcade nearby but most of my early GG experience was friendlies in the home. First GGX on DC, and then X2 on the OG Xbox which we could sideload custom BGM into since it was soft-modded. Can't remember for the life of me who I gave custom songs to or which songs they were though. I was smoking a lot of weed back then.