I’ve noticed that VOB files ripped from DVDs have a brief audio dropout which coincides with the chapter break on the DVDs.
My setup is this: rip on Vista x64, transfer to TiVo S3, playback thru receiver (5.1 audio). Happens every time. I’m pretty sure it didn’t happen 6-9 months ago. I kept hoping it would be fixed & so haven’t reported it until now.