Xilisoft Video Converter audio sync problem partially resolved, but ....

I read the FAQ from the Xilisoft site and found that there's a solution for the audio sync problem: Simply choose Add Directshow file instead of drag and dropping files will solve the audio sync problem. Unfortunately it only works for some files, like MPEG file. It doesn't seem to work with divx files, and worst of all it actually renders file into something unwatchable. Sigh. So for divx files I still have to stay with WinAVI.