目前安裝的是K-Lite Mega Codec 3.5.3
日前開啟一rmvb檔時，只有影像，沒有聲音
開檔時，錯誤訊息如下，請問該如何解決？

The following pin(s) failed to find a connectable filter:
Audio Switch::Out (在下拉盒中)

C:\Documents and Settings\My Documents\25.rmvb::Output 01 (Audio Stream)
RealAudio Decoder::XForm Out
Audio Switcher::Out

Media Type 0:
--------------------------
Audio: PCM 44100Hz stereo 1411Kbps

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: 1
lSampleSize: 10240
cbFormat: 18

WAVEFORMATEX:
wFormatTag: 0x0001
nChannels: 2
nSamplesPerSec: 44100
nAvgBytesPerSec: 176400
nBlockAlign: 4
wBitsPerSample: 16
cbSize: 0 (extra bytes)

pbFormat:
0000: 01 00 02 00 44 ac 00 00 10 b1 02 00 04 00 10 00 ....D.........
0010: 00 00 ..

附帶說明，連同以前舊的、沒問題的檔，不論什麼樣的格式，也都遇到同樣的問題，部份錯誤訊息如下：
MPEG-1 Audio Decoder::Out
Audio Switcher::Out

Media Type 0:
--------------------------
Audio: PCM 48000Hz stereo 1536Kbps

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: 1
cbFormat: 18