Low Volume on Characters Voices on DivX Movies

The movies ive downloaded or ripped always have the problem of low volume of the characters voices compared to relatively loud ambient noices in the movie does anyone know a solution? I found this explanation after a bit of searching on the net but does anyone know how to fix it?
"Most of the time the reason the audio is so low, from AC?.? to stero is because the filter doesn't remux the streams the best way, and so 'ambiant' noise is overly-baised to the voice tracks. This is difficult to fix properly on the fly, and so useually ends up with very quiet voice - and normal volume sound fx."

 

It can be fixed if you have an audio editor, something like
Sound Forge, or Adobe Audition. By use of a compressor,
the very quiet parts become louder, while the the parts that begin
very loud become quieter.

This has the effect of reducing the dynamic range, ie,
the difference between the loud and soft parts is less.

 

thanks man ill try using soundforge to compress the audio range