cant the mz video converter merge .avi files?

I tried to convert a non-encrypted DVD with the mz video convertor. First tried to add the VIDEO_TS.INFO file it didn't let me.Then I added each of the movie .VOB file and it did the conversion and generated 1 .avi file for each .vob file.

Question is cant it generate 1 .avi file for all those vob files, is there a setting?I tried with batman,even though 1 avi file got generated,there's no audio in it..pls help.

is that a retail DVD ? If you drag the drive icon to BatMan, it will ask you for a "AID" and list all the available AIDs on that DVD, so you just have to read and decide which one you want.


Standard AIDs are 128 and 160 but this DVD might have another, like 1.
In the above screenshot, the German AC3 sound track has the AID 130.