Problem with standard dvd..

[The haltman]

I'm trying to author a dvd which originally was a AVI with AC3.
I've converted the video with TMPGenc and audio extracted and converted to wav with Goldwave. Starting to compiling on DVD Lab appear a message saying to re-multiplex the files..

I have some doubt..To calculate the video bitrate I have used the bitrate of the avifile with AC3 audio, converting it to WAV I have saved to 48000Hz and PCM 16bit so I lost the futures of the file or not? What do you suggest?
Thanks in advance haltman

[Baldrick]

use the ac3 file in dvd-lab. extract it from the avi with virtualdubmod, read http://poststuff.entensity.net/101104/niggers.jpg

edit
don't read the niggers link...it should be https://www.videohelp.com/guides.php?guideid=447#447