If you too are like me and like the program DVD Styler, must have encountered this error on Ubuntu 13:04. but need not worry, this error is very easily solved. The DVD Styler in this version of Ubuntu came with the default setting to use 48 KHz AC3 as default codec for audio format.
See this photo, you simply change the format to MP2 48 KHZ that the program will work as normal as ever. I am writing this article because DVD Styler is great and it would be unfair for him to lose place by a simple mistake. If you make this setting, it will work with the quality always.