Regular audio CDs purchased in retail stores. No copys.
They are old (several YEARS old). Doesn't happen to all audio CDs I have, but quite a few.
I remember my wife bought an Elton John "best of" compliation (can't remember the exact title), but it was white, and had three CDs, and that was the very first time I noticed it. At the time, I happend to notice it in the car. Put it on the system in the house, and sure enough....it was there. This was a brand new CD, but most of what I am hearing them on are in the neighborhood of 5-7 years old, maybe more.
-Alan
