When I open iTunes my library has 3837 songs and 16.32GB. But when I look at the Music folder on my external hard drive where it is all kept it says it is 73GB! Through various early, amateur attempts at moving the libraries around etc I have ended up with a chaotic system where folders called 'iTunes Library' [or similar] are nested within other folders seemingly ALSO containing all my music... (see attachment) Unfortunately these folders are not all identical, though there is much overlap. So my question is: how can I tidy this up? Basically I want to pick up one copy of every song on my computer and put it into a new, tidy library so that i delete the tangled chaos of the rest...? Thank you!