Same Problem
I'm new to Mac as well and having the same issue. I reformatted to FAT32 and then HFS+ both won't let me access my library from iTunes. I just don't want to keep all my media on my Mac. It is too much and will continue to grow. I haven't tried the programs that were mentioned yet. I'm taking it an Apple Store and get a right answer. I will share if find out anything. Let me know if there is anything else I can do.