Can I add an audio track to an existing file structure?

[AlienCowThatMoos]

Here's what I want to do. I want to rip a DVD, keep exactly the same structure (menus and such) but add a second audio stream to the main movie. I've got the second audio stream as a wav and I can convert it to an AC3, is there any easy way to add it to this DVD and then burn it onto a DVD-R.

Also I don't need to link this second audio to any menus, I'd like to just select it with the audio button on the dvd remote.

DVD remake seems to offer this option, but it only lets me specify what kind of audio I'd like to add, I can't find any option to actually import it.

[guns1inger]

Look up IFOEdit in the tools section, then look at the list of guides assiciated with it. There are a couple there to do this type of thing