I got no sound with DVD Decrypter. Why?

I just used DVDDecrypter for the first time. This is the first DVD I ripped. Ripped it to the hard drive.

The dozen or so chapters of Fantasia 2000 became five 1 gigabyte files which apparently are 5 chapters. But 2 of those chapters have no sound. The video is great. And the sound in the other chapters is great.

What do I need to do to get the sound for all the chapters?

What do I need to do to get back the original chapter segments?

In what mode did you use DVD DEcrypter ? File mode, Ifo mode ? Did you have stream proccessing turned on or off?