I'm not real familiar w/ ::dvdrip::, have only used it a couple of times, but you're absolutely correct about the audio sync... I had several issues w/ that.I am using dvd::rip on linux to transfer all of my dvds to my file/media server.
Unfortunately, the audio sync is terrible. After a bit of google'ing I think I'm supposed to set the "-M" to "4" rather than "2". I see where I can add parameters to the transcode line, but this adds a redundant and conflicting -M parameter. Where do I set this in the GUI?
Have you looked at Acidrip? I've had better luck w/ it, I use it to rip my DVD's to avi's, but it has all sorts of options.