Best sound Quality

hi ppl,
i’m new to dvd burning.i use nero vision 3.1 to burn my divx movies on a dvd so i can watch it on my dvd player.how can i ensure that the dvds i’m burning have the best quality of sound possible :rolleyes: .means is there any other software that i should use to convert my divx in dvds.i burn 2 movies on single dvd not more than that.