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

When you want to rip Audio CD in MediaHome, you could go to Opitons/CD-Ripping to set the target format and location, like below screenshot: 

CD Ripping

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.

Rip Audio CD