A good article for beginners, but I feel there's something missing. Not everyone uses a computer to playback digitally stored music. An increasing trend is the use of streaming, using devices like the Squeezebox 3 or Roku to receive the music data wirelessly and play it back on your hi-fi gear. The music can be stored on a NAS (Network Attached Storage) or on a pc if you really want to leave your killer gaming behemoth running just to play music. This is a huge subject and could be addressed in another article (hint)! There's so many options in this emerging market at the moment that not many know of. (I'm about to buy a QNAP NAS and a SB3 for my digital music).