Please help. I have organized my iTunes library on my PC hard drive by artist, songs names under artist, no album names. Under some artists...album names will appear again & under the album, duplicates of the same song. Example: under artist Carl Doy, I have the song In the Moonlight. Also under Carl Doy the album name suddenly appears again for no reason & under the album name, 01 In the Moonlight, 01 In the Moonlight, 01 In the Moonlight. Several duplicates. Why is iTunes doing this & how do I stop this?