> I need some help, mabye u guys can give me some info. I wanna transfer certain sounds from Yuries revenge to RaII, but I cant see to locate the .mix file with all the unit sounds in them. I wanna for example use the voice from the apoc tank in yurie's revenge to replace the one in raII. I know you must modify the sound.ini (which I already have extracted on my desktop), but theres probably more to that as well. can anyopne help me?}

> (can the sounds be in that "audio.bag" file within the local.mix file?)

Yes, launch XCC Sound Editor.
But you only need to extract audio.bag and audio.idx to your RA2 dir and edit sound.ini.