I have the studio CD by XXX aritist and a greatest hits cd by the same artist. How can I import both without creating duplicates

I usually import the entire album anyway. I feel sometimes the songs are a little bit different enough to have them both (or tripled) on my computer. However, when you go to import the album, there should be a checkbox for each song to be imported, uncheck the duplicates. Or you can import the music, then go to View > Show Duplicates, and delete the duplicates that way.