CloneDVD Mobil vid/aud out of sync AV700



I think I tried all the DVD to Archos AV700 trial conversion software out there and they all seem to have problems. CloneDVD Mobil had the best smoothest picture but the video leads the audio by about 1/2 second. Is there any way to adjust this? ImTOO DVD Ripper platinum produces a vid/aud that is in sync but the motion is visably jerky (slow/fast jumps) and too irritating to try to watch. I have the latest DIVX codec as well. I assume that I was to download the player codec and not purchase the full version?