I had a CD burner in the early 1990s. Cost $1200. Loved it, Everything on all my HDs would easily fit on a CD. I quickly learned that when I started burning a CD, I couldn't touch the computer at all or I had a coaster. Disks were $2.50.

The Mac plus should have no problem reading CDs as long as the format is compatible. I once hooked a CD drive to a SCSI card in a 1977 Apple II and it could read CDs. Trouble was the CDs had to be in ProDOS format and there were only a few of those made. The ProDOS CDs I burned on a Mac worked though