Good that you brought in Auto GK.
I have tried
AutoGK as well as DivX lab's own
DivX Converter, before deciding that Dr.DivX gives the best possible video with perfect AV synchronisation and is the easiest and convenient to use by virtue of its simple interface.
(I have licenced copies of DivX Converter as well as the erstwhile Dr.DivX 1.0.7 --- the last shareware version before it went open source)
Specifically for this project of ripping a music DVD by chapters (tracks), deleting unwanted chapters (vobs), consolidating all the remaining vobs together and converting it into one 700MB Divx file without pain, there is no way with AutoGK and DivX Converter.
What all one does with Dr.DivX is, drag and drop
all the vob files together into his window, select 700MB and that's it.No pains.