missing audio codec format tag 1

Blur

Guest

i have problems using Windows Media Player 9. fine playing video but the problem is, there’s no sound.

the message i got:
the audio codec identified by the format tag 1 is required to play this file. to determine if this codec is available to download from the web, click the web help.

been to web help...but it didn’t help. Gspot didn’t help either. anyone solved this problem yet ?? Plzz help