Hello, this is KMPlayer team.
KMPlayer doesn’t support Dolby(AC3/E-AC3) & DTS audio codec.
In order to use this audio codec, you are required to buy Dolby & DTS Codec.
The purchased codec can be added on KMPlayer through External Audio Decoder tab in “Preferences”.
Please follow the below steps.
1) Preferences(F2) → Filter Control → Decoder Usage → Internal Audio Decoder
→ check “ALL Disable”.
2) External Audio Decoder → click “External Decoder Search”.
3) Add your purchased codec by clicking “Add External Codec”.
** KMPlayer supports Dolby codec(AC3/E-AC3) in Window8
Enjoy your video with KMPlayer.