this is weird. i have a playlist in my itunes that somehow doesn't allow me to rearrange the sequence of songs manually (as in dragging it in order). whereas my other playlists allow me to do it! i noticed with the latter ones that "part of a compilation" (in their get info) was marked "yes" so i chose 'yes' to my pop playlist (the one i'm having difficulty with) but to no avail. help!