I tried to multiplex the audio to video in the 'Convert DivX to VCD with subtitles' guide but I keep getting error messages. The message says 'Illegal MPEG audiostream' and then when I clicked OK a warning box pops up and say '215471 s packet cause buffer underflow. The MPEG file might cause error when it played'. I play the output mpg and the sound IS there but it's off by 2 to 3 seconds. Help please.