Error converting avi files to dvd format

Hi looking for some help on a message I get, I am completely new to this. I keep getting a message saying audio system data overflow when I try to convert some files from avi to dvd format does anyone no why, the file stops converting about 5 seconds before it is finished and if I try to play it all I get is a loud long bleep and no audio but I do get the full picture from start to finish I am using winavi converter and have tried nero as well but nero starts to convert it but then stops almost straight away.

Although slow compared to other AVI converters I have used the Cucusoft AVI/MPEG to MPEG, VCD, SVCD, DVD Converter and so far it has done a very good job.