I have read the other posts about how to sync the audio to the video by demuxing it, delaying the audio, and remuxing it, but I would also like to know if I could fix it while converting it.

I first used Prism which seems to work well, but when I tried converting videos encoded with On2 VP6, it wouldn't work. I searched the internet and found K-Lite. I installed it and Prism started converting the VP6 Flash videos to MP4, using ffdshow to decode.

Is there a setting I can adjust in ffdshow to make sure that the audio is synced? (The sound is MP3)