You'll find further information about how to automatically recognise songs under following link:
Automatically recognise songs and CDs

  1. Go to Options.
  2. Click on CD-Ripping to set the target format and location.

In Audio CD browsing view, with the Import function, the disc content will be ripped to the location you have defined, and will be added to Nero MediaHome media library automatically.

CD Ripping

Rip Audio CD