I have a lacie external drive that I have about 50,000 songs on. My windows machine sees all of the files, but when I plug it into my macbook pro, it only sees about half of the files. Do I need to copy the drive to a drive formatted specifically for mac, and if so, how do I do that? If I just copy the drive through my mac, it will only copy the files it sees, and will not solve the problem.