You can:
1) treat your disks with $100/4 oz. treatment
2) cut the outer edge at an angle
3) put colored pen on the inner ring
4) use destatic gun or demagnetizer on the disks
5) treat with fluorescent light
6) rewrite the disk to a CDROM
7) coat the top surface with a rubberized coating
or you can:
Get a good reclocker like the Synchro-Mesh and insert in the coax cable between transport and DAC
Seems like a no-brainer to me.
I use the iFi SPDIF iPurifier on my home theater and smart TV. Great for movies and only $150.
Reclockers rule!!
Steve N.
Empirical Audio