My hard-drive is filled with invisible space...
I recently deleted my iTunes library to reinstall a fresh copy from another Mac but when I went to copy it...it said that there wasn't enough room. When I checked my hard-drive it said there was over 100GB free but from further inpsection there is only 30GB free...I pressume this invisible space is from my old iTunes...how do I find it and delete it...no program I have tried says there is anything on there and yet my OS says there is
MacBook (13-inch Late 2009), OS X Mountain Lion (10.8)