First, you will have to transfer the music to the mp3 player. You can transfer music and pictures to your player using Windows Media Player. YOu can download it from here:
Once you have installed WMP, reboot and plug your mp3 player. By default, Windows Media Player automatically loads all the music and picture files
stored in your My Music and My Pictures folders into the library. If you add new files to
these folders, they will also be automatically added to the library. Then you will have to synchronize your mp3s player with WMP.
You can sync your music and pictures to your player using Windows Media Player. Simply
connect your player to your computer using the supplied USB cable, set up sync, and you will
be ready to sync your media library to the player.
When you connect your player to the computer for the first time, Windows Media Player
automatically selects the sync method (automatic or manual) that works best for your player.
Automatic: If your player has sufficient storage space (at least 4GB of free space) and your
entire media library can fit on your player, your entire media library will be automatically
copied to your player as soon as you connect it to your computer.
Manual: If your entire media library cannot fit on the player, then you will be prompted to
manually select specific files or playlists that you want to transfer to your player.
Once you have transfer the music you want-unplug the player from the computer and that's it. If you have more doubts, you can download the manual from here: