OK, I'm a Windows guy converting to a Mac, so bear with me please. Got my Mac last week and moved the HHD to the superdrive bay in favor of using a smaller SSD for booting and program running. I just finished moving all my old media files over to my Mac and it looks to be storing two copies; one on each hard drive. How do I fix this? I am running the most current OS and in iTunes I've got it selected to put my media files on the second hard drive. Also, is there any way to change the file extension so I can manually do this without using iTunes? Some of my media files are not supported with iTunes.