Choosing DVD audio stream with 0.8.6 Mozilla plugin

[Spellcoder]

I'm trying to play a DVD video and select an audio stream with the Mozilla plugin.
I tried 0.8.6-test1/2/2a and I can't seem to get it to work.
First I used dvdsimple:// which doesn't seem to work anymore in the new 0.8.6 plugin, so now I use dvd://. However it might be a problem in VLC itself, since when using the VLC player,using Open Disc from the menu and then changing the audio track has no effect. (though changing audio stream from the menu while playing does work)

So what should I use in the code?
The following code is one of my attempts:

player.playerObj.playlist.add( 'dvd://D:@1:2',null,":audio-track=0"); // MRL, name, options
player.playerObj.playlist.play();


And a second question: is there a way to change the audio stream while the video is playing?