windows video editor for pictures to slide show

I am trying to make a wedding album for my friend and have used a few diffferent progrms already but they do not do what he wants them to do, he would like to put his slides in a particular order and then add music of his own to a selected range of slides,
Every time i do this with memories on Tv 4 it keeeps changing the music to its own default, how can i find a program that will allow me to put the slides where he wants them and then add his own music to selected slides so they play in the right order. i am after a free program if Possible , can any one help me.
Other programs i have used are Windows Movie maker. Ulead Video Studio 9, ACDC 5 and Power Point Presentation but have had no luck with any of them so far. They all keep changing the position of the music .