Hi, I have a recently developed problem I hope someone here can help me with. I have been using Mainconcept to covert AVI files to MPEG2 files to author to DVD. Recently the files created with Mainconcept have the sound out of sync with the video. This just started doing it. I tried uninstalling and re-installing Mainconcept, but it is still out of sync. The original AVI files are in sync but when I convert them the sound is now off. This used to work pefrectly fine for me and this problem just started to occur. Can anyone tell me why and how I may be able to correct this. If I need to supply anymore info, please let me know. I am using Windows XP, 512 ram, 2.08 ghz. Used to work fine. Thanks for your help and your time!