No Audio with DivX, MPEG-3

I’ve got no audio, on downloaded Avi, MPEGs? I’ve run GSpot and the Audio Format says that I have 4 compatiable codecs installed.

Fraunhofer IIS MPEG Layer-3 Codec (adv)
Fraunhofer IIS MPEG Layer-3 Codec (pro)
Moonlight Odio Dekoda
MPEG Layer-3 Decoder

Render shows (S) — > AVI Splitter Moonlight Odio Dekoda — > (R)

Shows rendering to be successful.

However once I open the files my sound stops working on all devices untill I restart my computer again.

What shall I do? Please Help....

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