Audio Sync

I have all the latest versions of AnyDVD, CloneDVD, and CloneDVD Mobile. I have successfuly backed up the following 3 movies to my hd: ‘Cars’, ‘The DaVinci Code’, and ‘The Lion the Witch and theWardrobe’. However, whenever I use CloneDVD mobile to create avi files from my raw VOB files from the backup to my Archos AV500, using the Archos 300/400/500 Profile, the resultant avi file,which will play on my Archos, has an audio sync delay that is very noticable. I have verified that the raw VOB files play just fine in WinDVD 8, without any sync issues. I’ve also tried going direct from DVD, with AnyDVD running, straight to the Archos device with CloneDVD mobile, but end up with the same sync issues. Any suggestions?

Also, forgot to mention that I have the same problem with ‘United 93’.