Do you like iTunes to manage your MP3s, bit don’t have an iPod?
iTunes Agent may just be what you’re looking for:
“iTunes Agent is a small application resting in your system tray constantly looking for new MP3 players and other music capable devices connecting to your system. When a device it recognizes is connected to the system, it will create a playlist for the device in iTunes and it will synchronize that list with tracks on your device.”
Not bad – unfortunately you can only manage one playlist, but still.