Im after some dvd burning software to burn avi videos, so i can watch them on a DVD player

Previous attempts i have had 2 seprate programs, 1 to convert the avi file and one 2 burn it to the dvd, but all my attempts seem to result in the sounds being a couple of seconds out which you can imagine is really annoying.

Does anyone have sujestions of programs they have success with in the past, i dont mind if the program costs a little but of money aslong as its not really fiddely

Thanks :)