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Data storage
Many MP3 players can twice as exterior storage devices, letting you to shuttle data between PCs. A few models do not even need drivers; thus, you could move a resume or a presentation to the laptop of the individual seated next to you on a flight. So-called plug-in players do not even require a wire since they have built-in USB connectors.

Personal information management
A few MP3 players, notably the Apple iPod and Creative’s Zen line, can allow phone books and schedules. The information usually entered into Outlook or another PIM program, and then synchronized to the tool where you can view it but not modify it on the go.