Audio codec is missing

Vista Home Premium with service pack 1.
I got a .wmv file and tried to play it in Windows Media Player:
But got an error "an audio codec is needed to play this file"

The Vista showed I may need Sipro Lab Telecom ACELP.net(130).

Anywhere I can download this codec?

I have no problem in playing this file in my XP SP2 pc.

If you still want the codec try Vista Codec Pack or K-Lite Codec Pack.

Alternatively, you can also use VLAN or GOM media player. They have the
codec built-in.

I have VideoLan installed and this even worse.
I got
"VLC does not support the audio or video format 'undf'. Unfortunately there
is no way for you to fix it.

My VideoLan version is 1.0.1.

BTW, where can I download the
Vista Codec Pack or K-Lite Codec Pack ?

I downloaded both package but still cannot play audio but video.

Found in 5 seconds with Google.
"In order to playback audio, you'll need the "Sipro Lab Telecom ACELP.net"
audio codec installed. If you do not have this codec installed, please
click here to download the codec..."

No luck.
I downloaded and install the file:
acelpacm.inf

Play the file .wmv still got the audio codec missing error.

If you installed correctly and you're running 32-bit Vista, then I'm darned
if I know. There's one suggestion about audio-out settings at the bottom
of
I can't play WMV Audio
that might help.

The link seems does not tell the solution.
The first post was in 2006 and I guess Sipro ACELP had already fixed it.
In the case of no audio to check the speaker seems nothing to do with the
error came from WMP as it popped up and error message.