Sound vs. Picture

[Wicked]

I know this thing has been up before. But i Like to have a clean answer in this..

The sound go faster then the picture.. why?

Its like this in BS player and PowerDVD and other..

[adicoto]

To process an audio MP3 file an 100 MHz cpu is enough.
To process an video file as in .avi divx you need an 4-500 MHz cpu.
Somwhere between them, cpu can decode audio as necessary, but video remain behind. That's all.