Organizing a music library seems like it should be easy, but complications keep getting in the way. I've found some uncomplicators. In Short Circuits: Over the years, tiny computers have been novelties, but they haven't really gained widespread acceptance. Now there's a new one with some power. Are you tempted to buy some of those sale-priced $20 "RayBan" sunglasses you see ads for on the internet? If so, just drop a $20 bill in the trash and you'll be ahead of the game. In Spare Parts (only on the website): Canon is about to release a $400 camera with a spectacular zoom range and some significant shortcomings. • In addition to renting you an overpriced cable modem, your ISP may soon ask you to rent an overpriced mesh system. • A survey by a bank seems to suggest that users of bank apps place convenience ahead of security, and that's troubling.