audio-video miss-match

i added some photos from my pc to movie maker &then i added some music , when i tried playin the video , it was showing the photos by an order different than that they were put at,.
i can see the audio is streaming well & fitting with the photos at the right (edit) side .. but still the tutorial is goin crazy !
& there is some black pauses also in between photos that i couldnt erase !