Judaism.com has put up a number of melodies to help people learn the Passover Seder online. You can hear the melody through your computer, and look at the text in a variety of Haggadahs. They give corresponding page numbers for several popular Haggadahs. http://www.judaism.com/digital_haggadah/
Just find your Haggadah and learn the music to go along. Have a Festive and Happy Passover.