Then it means your VOB only has one track :!:
I just tested loading a VOB in MPEG Mediator, and I can choose 3 AC3 tracks on this particular movie.How about using DVD Shrink :idea:
Just go into re-author mode, and visually select the range you want, then "Backup" that segment :!:
You'll have a VOB with video, and AC3 audio of only the part you selected. Then you can extract that audio with DVD2AVI or MPEG Mediator :D

-kwag

Kwag,
you wrote:
" Then it means your VOB only has one track :!: "
8O
not only one, i have:
english LPCM 2 channels ,
english AC3 6 channels and
english DTS 5 channels
...for this reason i'm lost :!:

well , i can try dvdshrink,never test it before but
now i'm more confused...... :?
after the job in dvdshrink i back to the start point...
8O
:arrow: how can i extract only the wav files
from vobs using dvd2avi or mpegmediator :?:

:lol: :lol: :lol: :lol: :lol: :lol: :lol:
or i misunderstand it all!
:imstupid: :dark: :screwy:

Very simple :D
Load your VOBs in DVD2AVI (1.77.3 best )
Select the range you want to extract with the "[" and "]" keys. Then select your audio track, and select "demux" (For AC3 extraction) or "Decode" (For WAV decoding/extraction).
Hit save project, and enter a name. Now you'll have a small .d2v (which you can discard) and your short AC3 file or WAV file, which is the audio selected in your range.

-kwag

8O

:lol: :lol: :lol:

in the end......is very simple,
i "break my head" searching....
and the solution is in the start point.

:lol: :lol:
but :oops:

thanks KW,another goal :!:

:D