I'm old-school in that I like all of my music stored and synced locally on my Macs and iDevices. I've got plenty of music purchased from iTunes...but the majority of my current library is my cd collection ripped with lossless encoding. I'm intrigued by the ability of Apple Music to pick and choose (almost) any song from the Apple iTunes Library for streaming around my house and downloading for offline use. What I don't want to have happen is for my current collection stored on my devices to get moved off. Reading the Apple website it's not exactly clear how they sync stuff to iCloud and what is done with the original copies. At the end of the day, I want my lossless library locally stored and the ability to add Apple Music stuff to it without jumping through hoops to re-download, etc.