Copyright issues for songs during wedding banquet

[tiaraqueen]

Does anyone know anything about copyright issues for songs? I happened to read this link but dont quite understand.. if my friend who is not a professional videographer wants to help me with my montage, is it ok? Do i need to pay for copyright? Who do i pay?

http://www.kiasubride.com/hotel-reject-wedding-montage-due-to-copyright-infringement/

Appreciate all comments!