¿How to extract an audio layer from a dual DivX Video?

[welsungo]

Hi.
I've got an divx video dual with two audio layers:
1.- Spanish
2.- English
I would like to extract de second audio layer to make an english avi file and then to be able to add spanishs subs, and so , to make a english videoCD with spanish subs. The problem is that virtualDub only recognizes de first audio layer, the one i don't want... ¿who can i make it? ¿is there any other video program that will be able to recognize all audio layers?
Thankyou.

[Baldrick]

Use nandub(a virtualdubmod) and you can choose to save the second audio track to wav/mp3.