Hi I'm working on a small project for myself and some of my friends we basically want to try and replace two audio streams in the star wars prequel blu ray set while keeping the menu's intact.

This blu ray it seems uses bd-j and multiple angles. I was attempting to reauthor it in multiavchd to no avail i was wondering if anyone could offer any advice or guidance on programs to use or whether or not it is even possible or if it would be better to just create my own menus. Which I can do I just wanted to attempt this way first if it is even possible with available tools.