Could someone explain to me what the "type" means on a cdr. I have been using TDK data cds for music. They are TY type 1. I also have some maxell data cds that are type 4. I can't remember the company but it is not TY or Ritek. Today I put on a maxell audio cdr and it said it was TY type 1. What exactly is the difference in types when all are 80 minute cdrs. And if both TY are type 1 does that mean there is no difference between the audio and the regular data cds? I am really confused by this and don't see much written about the different types anywhere that I can find on google.