Why is that sound doesn't play when i watch movie?

why is that sound doesn't play when i watch movie on windows media player nine, but when i play music on it, there is a sound, but if i watch movie i can only see the video but i cant hear the voices.help. i have sound card, i play it on a headphone.

Answers:
Get the Combined Community Codec Pack.
Sounds like maybe a codec problem.
search for sound codec on google.com for the version of your media player nine. that would solve the problem
Try using a different player such as VLC or Media Player Classic. They're both very good players and they play just about any kind of format. No need for codecs.

VLC
http://www.videolan.org/vlc/

Media Player Classic
http://www.afterdawn.com/software/video_...
may be a codec problem.

The answers post by the user, for information only, RunQA.com does not guarantee the right.


More Questions and Answers ...
  • Which of the following is input device (a)speaker (b)printer (c)pendrive (d)scanner?
  • Computer case battle, you decide....?
  • I need the following on my computer;?
  • 320mb xfx 8800gts XXX edition?
  • I've just reformatted my computer...?
  • My compaq pc don't wanna start after i did system recovery.how can i get it back normal?
  • Ac97 sound card?
  • Case fans??
  • Is my graphic card good enough!!?