How do i transfer my songs from itunes onto windows media player?

i just recently got a white krazr, and i'd like to get the music from my pc onto my phone, but the only way to do that would be to plug in the usb, and then the songs from windows media player would go onto it. only, my moms songs are on windows media player, and none of mine are. how would i put my songs onto WMP from itunes?