To delete songs from your song library, make sure the entire library is chosen as shown below.

Right click the treble clef symbol  in the song list and then click Delete Song(s).

Deleting Multiple Songs

To delete multiple consecutive songs, click the first treble clef of the song you wish to delete. Scroll down to the last song you wish to delete and hold shift and click on that song. You now have multiple songs selected. Right click on the blue highlighted area and click Delete Song(s). To delete non-consecutive songs, hold the Ctrl button and click on each treble clef of the songs to delete.

Deleting Spanish Songs

To delete all Spanish songs first click the drop down bar next to entire library and change your group to Canciaones Español. Follow the above instructions to delete multiple songs.