Still confused
How exactly will this work on my iPhone 4s? I don't necessarily need access to all my music, and I don't want to pay the data rates to download it all the time. I only want a portion of my music, and would like to be able to shut off downloads for "streaming" (at least non-wifi). Can I still choose a portion of my library to physically have on my phone? I also don't really want to wade through my entire library on my phone, I'd rather just see what is physically on my phone. Is this still possible? I really want to sign up, as syncing between computers will be nice, and at least some mobile access to my entire library would be nice at times, but I am afraid of unknowingly using too much data just to listen to music.