HP Envy 15 Beats, Audio has a crackling sound to it every so often

I have a Windows 7 Hp Envy 15 Beats Audio computer, also known as HP ENVY 15t-3000 CTO Notebook PC, product number LW897AV. When listening to music my computer will have a crackling sound with the song that makes it most unenjoyable to listen to music with. I'm not sure what are valid ways to fixing it, i know it is still under warranty though