how to put images in the songs?

when, in the menu, select show thumbnail picture of "no image" appears alone. would want to know how to put pictures of their songs (sorry for my bad english...only speak spanish :c)

You can take pictures in Movie tab in PPD boot menu.
And, you can see "thumb.png" is generated in each score folder after generated.
So, if you want to set custom image, locate image which is named "thumb.png" in each score folder.