I highly doubt that you have forty year-old CDRs. CDs, sure—not CDRs. If you have the latter and you can still access the data, you are very lucky.
“If you have the latter and you can still access the data, you are very lucky.”
My wife had a bunch of CD-R’s we converted when they were about 20 years old. Still played great.
The original CD-R recording from 1991 still plays fine.
Don’t scare the guy.