Empty Audio folders

[BumbaCLot]

I have some Kung Fu movies that have empty audio folders, yet they play sound. Anyone have any experience in dealing with this structure and have any ideas how I can extract the audio?

[Baldrick]

Do you mean the AUDIO_TS folder on the dvd?

[BumbaCLot]

Yes there is a Audio_ts, resource.frk, and video_ts folder
resource.frk contains some pcwebl~1.exe, i will assume it is some extra pc-dvd stuff. Audio_ts is empty. Video_ts has 7 vobs, 0-5 vts_01_x.vob, a bup and an ifo, and then vob, bup and ifo for video_ts.xxx.
Do any dvd's store audio in mode 2? like computer games?
Laughing Hyena 2 by jacky chan had no audio either, this dvd is The Hot, The Cool, and The Vicious.

[BumbaCLot]

Ok, it seems a lot of my folders all look like this, so the problem is actually with DVD2AVI not creating a wav file on these 2 particular movies.