I don't know how I did it, but I screwed something up & now iCloud & Keychain are nagging me for passwords. I want to nuke the hard drive & do a clean install of Yosemite. I know that I can export the playlist & the library, but I see no option to copy the actual music files. Can I just copy the music files folder to an external hard drive or flash drive? I know that I can upload the files to iCloud, but I don't know how to do that & I wonder if it is even possible since iCloud is nagging me for passwords. So, how do I go about exporting the playlist & library & music audio files prior to me nuking the hard drive? Then how do I import all of the files after I nuke the hard drive & do a clean install of Yosemite?