missing codec

Trying to open an MKV file, so i downloaded media player classic, which works but without audio! Heres the error message:

Stream 1

Media Type 0:
— — — — — — — — — — — — —
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {8D2FD10B-5841-4A6B-8905-588FEC1ADED9}
formattype: Unknown GUID Name {B36E107F-A938-4387-93C7-55E966757473}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 4342


Media Type 1:
— — — — — — — — — — — — —
AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {CDDCA2D5-6D75-4F98-840E-737BEDD5C63B}
formattype: Unknown GUID Name {6BDDFA7E-9F22-46A9-AB5E-884EFF294D9F}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 2

Any help would be appreciated. Thanks.

that’s AC3 audio. google or browse through the ac3 threads on the board for where to download it. (Sorry, audio codecs aren’t my specialty.)