decrypt ac3 file

[hungsg]

i use DVD Decrypter 3.2.2.0 to decrypt *.vob, *.ifo file into harddisk
i get file *.m2v but i can't decrypt into files *.ac3. i have chose tickbox ac3 & demux , too. But i still don't get file ac3
please tell me how to get file *.ac3 by DVD decrypter
thanks a lot !

[LIGHTNING UK!]

The options are on a per stream basis.

Checking the stream isnt enough. You have to highlight it and THEN click demux.

Look at the title of the groupbox where the options are. It changes depending on which stream is selected.