No MP3, prefer T-Y or Fujis but take decent quality if you don't use these specific brands. I burn with unmarked high quality T-Ys. Let me know what's going on. Everyone makes mistakes. I own up to mine and I like trading partners to own up to theirs. It happens. I also understand that you probably have a busy life that occasionally gives you less time to trade. If you're too swamped to complete the trade rapidly let me know and I'll understand. If something has come out of the blue and delayed you, let me know.