I just have it all in iTunes (or another program of choice). All the music I spin goes into playlists and exported to recordbox All my other music is mostly full albums, and just goes into iTunes and gets tagged, then i browse to it by artist or album in iTunes and doesn't go in a playlist. iTunes handles all of my folder arranging, sorting it in folders in the format " Artist/Album/TrackNo Title.mp3" If your an iTunes hater, sure there would be another program that does similar. That's how it is at the moment, but I am considering creating a separate user profile on my computer, one for everyday use, and one exclusively for production/Djing. That will show separate iTunes libraries that way. May trial that soon and see how it goes