Problem with finished

I recently downloaded latest version of Windows Movie Maker.    I downloaded a holiday video from my camcorder & edited it  - cutting out unwanted frames & putting in some titles & captions.    When playing it I noticed that there was a very small gap between each video clip incl. the sound.  I thought this may disappear when saved as a finished movie so I saved it then burnt the file to DVD.  The DVD plays on another computer but there are still very small gaps between different scenes  - both video & sound.         The DVD wont play at all on my home video machine.