The description of M3USync - Play With New Friends
If you have portable Mp3 player and you usually use it, M3USync is the tool you need, because it lets you synchronize your M3U playlist files with your USB portable MP3 player.
Choose a folder in your HD and synchronize it with your portable mp3 player, so you will always know the music you have in your tiny portable player.
Don’t worry about the rest of files included in your portable player, because M3USync will modify only the desired folder, the rest will remain the same, in addition, it will always war you before deleting any file.
It is really easy to use, just choose the folders you wil synchronize and plug the player. You always see what happen, the current file name and the number of MB copied is displayed during the synchronization.
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