I've just discovered something in my Library, and I don't know whether I have a problem, or if I should care . . . ;^) I have 16 songs showing in iTunes 10.0.1 from a 2-disk release called "Cafe del Mar Vol 13" - all songs play fine, and I have song and CD numbers for all songs, and each song has the box "Part of a compilation" checked. In my main file system (same level as "Applications") is a folder called "iTunes Music", and in that is "Compilations" - further down inside that is "Cafe del Mar Vol 13" but it only has 11 of the 16 songs. [/iTunes Music/Compilations/Cafe del Mar Vol 13] At the same level as "Compilations" is "iTunes Song Files" and in that is "Music" and inside that is another "Compilations" folder, and another "Cafe del Mar Vol 13" folder. This only has 13 of the 16 songs, and one is a duplicate. [/iTunes Music/iTunes Song Files/Music/Compilations/Cafe del Mar Vol 13] Which of these is the "correct" Compilations folder? If I compare the files in each folder, I have all 16 songs that are displayed in iTunes, just not all in one folder. Should I be worried? And should I bother with trying to "fix" either of these folders so they have the correct collection of 16 songs? If I move files around, will iTunes get confused? Other possibly useful bits of info: 1) I have almost 10,000 songs; 2) I use the iVolume app to set the same playback volume level; and 3) all songs have been synching fine with my iPod Touch. Thanks for any pointers or advice you can give . . .