Audio for videos won't work, but MP3s will...

[Guest]

Hi, I hope someone here can help me... This morning I stopped getting sound
for video files. DVDs, wma, avi, mpg, the whole lot. But MP3 will still work,
as will windows sounds. I know it's not a problem with the files, as they
were working fine yesterday. Today, nada. No codec pack seems to help, and
I've tried a few different viewing programs, but still nothing. The only
thing I've done differently today was run some virus scanners- but it seems
strange to me that they'd do this.
When I use Avicodec to get more detailed information for any video file, it
gives me this error message:


Media Player Classic could not render some of the pins in the graph, you may
not have the needed codecs or filters installed on the system.

The following pin(s) failed to find connectable filter:
Audio Switcher::Out

Stream 1
AVI Splitter
WMAudio Decoder DMO
Audio Switcher

Media Type 0:
--------------------------
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: MEDIASUBTYPE_PCM {00000001-0000-0010-8000-00AA00389B71}
formattype: FORMAT_WaveFormatEx {05589F81-C356-11CE-BF01-00AA0055595A}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 0
cbFormat: 18

WAVEFORMATEX:
wFormatTag: 0x0001
nChannels: 2
nSamplesPerSec: 32000
nAvgBytesPerSec: 128000
nBlockAlign: 4
wBitsPerSample: 16


So, any ideas? I'm utterly stumped.

 

[Guest]

Open WMP>Tools>Options>File types tab
Now see what is or is not checked. Check them all if you like, click Apply
and OK.