DivX Player 6.4 Audio not supported error code 8192

Hello techyv,
There is a problem I experience while I want to play avi video file format in my DivX player version 6.4. There is no problem with the picture, it plays perfectly, but the problem is no sound played. Also there is pop up windows, here is the message

The message says:
You may need an additional audio decoder to play the soundtrack of this file.
This file contains a track in the Dolby AC3 Audio (code “8192”) format. You may need to install a DirectShow decoder for this audio format in order to hear the soundtrack of this file.
Really blank about what to do, anyone can give a solution? Because I am really blind to this situation (FYI, this is the first time I use this program so I am confused). What it really mean? Really glad if anyone can tell me what is going wrong. Also I get confused by Gspot program, seem lot of things that are complicated and it doesn’t help me to solve the problem.
Please help, I’ll wait patiently for any answer that can help solve this problem.
