I'm in the process of trying to copy my iTunes music library from my PC to MBP. I searched for and found numerous useful and easy to understand articles in the forums on how to do this process. The issue I'm having is that much of the music in my iTunes library is not showing in the "My Music-->iTunes-->iTunes Media-->Music folder. Only a small portion of my music is in that folder. I can see it in iTunes but can't find it in this folder. What's going on here? Thanks.