Cannot locate -Free fix for choppy audio and video streaming on microsoft xp

Few things can cause this, most common is just a slow computer, slow internet connection.

If this is a new thing to your system and it played all files OK before, you can try uninstalling and re-installing Flash and Silverlight, try using a different web browser.

You should list your system specs and also what type of videos have issues, is it HD ones? All of them? Anything change before the problem started?