Ha I saw this on my psp!
This was an alright movie...Its kind of funny and maybe my computer but it gets REALLY LOUD sometimes lol.
Out of sync is no biggie it was annoying sometimes but maybe if you try making it a MC (put your sound in a movie clip).
For example lets say you have a person saying "I love you" you put that in a movie clip (name it I love you) of course and then you have a sound saying I hate you put that in a DIFFERENT movie clip...
Hope this helps!