Now I transferred again a 915 songs. I renamed the album into "RNB" using MP3TAG then I transferred it to my n9. But when I look now into the album RNB on the first page of music player, only 750 song are listed in the album RNB. And then again the 165 songs is scattered, but these 165 are also named RNB in the album. I just don't know why can't they be included in the same album.