sometimes giving those CD-ROM's a warm soapy bath helps to remove any finger oils. BUT be very gentle by just using your fingers then rinse with clear water under a running tap, then gently dab dry with a cotton towel to absorb the moisture and leave the CD to air dry in a vertical position for a couple of hours. That may the answer because it has worked for me.

Good luck.


Mac Audiophile 2020 2019 2018 2017 USB plus previous years versions

macOS Mojave - 10.14.6 @ Aug 16, 2019

iMac i3 3.6 GHz 8GB RAM 4K with Retina display

some examples @ sound cloud done with Mac Band and DAW's : https://soundcloud.com/you/tracks