Most of my music is from iTunes, but I have some albums (orchestra) that aren't available on iTunes that I bought from Amazon like 10 years ago. I want to back up these songs incase of a fire or my home is robbed and I can't re-download from iTunes. There is nothing illegal about backing up purchased CD music to the cloud is there? I was probably going to back it up as an encrypted disk image, I won't have any sync issues with an that will I? Thanks!