oh wow posting at the same time.
so about the rom making process,

i have been told that u need the operator file from waht i understand it contains info about all files in rom file and directory structiure.

on another note there is a file from the http://www.anextek.com/ it updates the audio drivers. now that file is anexecutable it runs from th epda andupdates the rom. i like that little proggie. now what wouldbe really cool is if we could dissassemble it and replace the audio drivers with what we would like to change.
i am sure thats not easy to do but its worth a try