Another problem is actual cut of the label. Just as copy machines and printers can be off, so can the machine that cuts out the label. Some companies' labels vary as much as 0.2 inches from label to label. At Octave we print both labels and directly on CDs. Printing directly on CD's is rarely a problem as they snap into place for an exact fit every time.
Labels are a different story.
You can turn the page upside down and print on the back to check the symmetry. To help you print labels correctly, Octave now provides you with a templates for use in making CD labels. All the templates are 600 dpi for super quality prints. The color levels are from 2-256 colors. Depending upon your software, you may also want to change the format into a .tif or .eps file.