I just bought a new Macbook Pro and transfered all my files onto it from my old Macbook. When I added my music to iTunes, it made copies of all my music files and created three folders with duplicates of every single audio file. This led me to have 100GB of duplicated audio. When I deleted it, none of it went to the trash and now I have 100GB of "Backups", but I can't find where these files would be do now delete. My trash is empty and there's no more duplicated files anywhere. Where on Earth would this be?