Insert a blank CD-R into your computer and select "Burn Files to Data Disc" from the window that appears.
Click the "Show Formatting Options" link.
Choose "Mastered."
Click "Next."
Drag and drop the music that you want to burn to the music data disc into the folder that appears.
Click the "Burn to Disc" button.
Eject the CD-R from your computer when the burning process finishes.
Open a "Finder" window and click "File," then "New Burn Folder."
Drag and drop the music for the music data disc into the folder that appears.
Click the "Burn" button in the folder and insert a blank CD-R into your computer.
Eject the CD-R from your computer when the burning process finishes.