Ed uses iTunes Match, has 40GB of music, and his laptop's hard drive has broken. He got a new 13" MacBook Pro with Retina display, and wants to download that music back to his SSD drive. Leo says that because Ed is an iTunes Match subscriber and has it all uploaded, he can download them.
Apple says he has to download them one song at a time, though. Leo says nonsense! Go into iTunes and look for the little clouds in his library. Most, if not all, will have a little cloud icon next to it. He should be able to select all, then download one song and they'll all download. What's great is that the song's he's downloaded will have no copy protection and will be 256kb AAC files (except for really low KB songs).