Importing CDs into iTunes is a common way to add music to your library, but sometimes it doesn’t work as expected. If your import fails, you may see an error message such as “The song could not be added to the music library. (Unknown error.)”

There are a few things you can try to fix the problem:

– Make sure you have the latest version of iTunes.

– Make sure you’re using the latest version of your operating system.

– Try a different USB port.

– Try a different CD.

– If you’re using a Mac, try repairing your disk …