When the player is first installed, no songs are present. You will have to add a few MP3 files first.
To add a single song, click the Add Song tab.

Click select song. Select the MP3 file that you want to add in the file dialog that pops up. Click next step to continue.

Now, you can choose a style to categorize the new song. Enter a new style, or click an existing style. Then click next step to continue.
Enter the name of the artist or select an existing artist. Click next step again to continue.
Enter the name of the album that the song comes from, or click an existing album. Click next step.
The player now shows a summary of your choices. Click finish to copy the song to the music folder of the player.
See Also
Adding records
Using the player