On the part of jabba. His voice is a very big problem to me. I tried my best to make his voice bigger but it is........ well see for yourselves

http://www.youtube.com/watch?v=AjNrGgTuvXE

The only way to make jabba sound like the return of the jedi jabba is to have someone re dub his voice and lower pitch. I think they even doubled the tracks and made one a little lower than the other. Make him say words that are like what the ROTJ jabba would say. And for crying out loud can we give him his Hooo hoo hoo hooo ha ha ha ha ha laugh back.