Roy,
I don't quite understand what you're referring to because I play my Karaoke straight from my hard drive (KMA) files. The files names CDGCDG HDZIP HDMP3G don't really mean anything to me. All my songs come from CDG's.
However, I will start documenting which songs are playing when this happens.
KOD
Dell Inspiron 1545, Pentium Dual Core, T4400 @2.2GHz, 4GB RAM, Windows 7 Home Premium W/Hoster 4.20
Sound, Video & Games Controllers - IDT High Definition Audio CODEC - Integrated Intel x4500 MHD Media Accelerator Graphics