显示是这样的：
RealAudio 解码器::XForm Out
音频切换器::Out
媒体类型 0:
--------------------------
音 频: PCM 44100Hz 立体声 1411Kbps
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {***********-0000-0010-8000-00AA00389B71}
subtype: MEDIASUBTYPE_PCM {***********-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 ..
參考答案:重新安装声卡吧
