I have had that problem quite a lot. I think it may be caused by shutting down kazaa while downloading.
I have managed to sort it out a couple of times.
Search through the movie using whichever player you like and try and find out where it goes out of sync.
You might see the picture go all funny for a second, it goes really blocky and seems to pause but the audio carries on making it go out of sync.
To fix it, locate where it goes wrong, and then using video splitter split the file into 2 parts.
BUT, NOT AT THE SAME TIME!!!!
Do the first bit and set the end marker to a couple of seconds before the bit where it goes funny. Shut the program down, then re-open video splitter and do the second part but start it a few seconds after the funny bit, and obviously set the end at the end!
When you open the video in video splitter, it will play automatically so pause it. remember the time where it goes funny and slide the slider along to a few seconds before. Don't bother trying to play it to spot the crap bit because video splitter always plays videos out of sync as soon as you move the slider.
I just realised this is probably really confusing because of the way I have written it, but it's not. If you get stuck give me a shout and I'll try and explain it better.
Mail me here!!!!! (mailto:
[email protected]?subject=Video Sound Sync Problem)