Altering the functionality of a Bluray menu button.

I wonder if anyone knows how I can change the functionality of buttons within a bluray menu?

I have created a bluray menu in Encore, only to come up against the hurdle of being allowed 8 audio tracks maximum. I know I can add additional tracks after the bluray is compiled, which I can navigate to with the audio selection button on the remote, but they will have no means of selection from the menu.

I want to be able to add buttons for the extra audio tracks to the menu, and link them to one of the 8 that I am allowed in Encore as a placeholder. Then add the additional audio tracks after the disc is compiled. After this, I want to redirect the buttons to the newly added audio tracks.

I’m not sure if this is possible. I know how to alter the appearance of buttons with bdedit, but not what they do.

If you can help, please chime in, I would really appreciate it.