This usually happens if your player doesn't support the AAC audio codec. Updating to the latest version of VLC usually fixes this.
: The audio format (Advanced Audio Coding) and channel count (Stereo). letsgotoprison20061080phdripx264aac20fgt install
: The audio codec (Advanced Audio Coding) and the channel configuration (2.0 signifies stereo sound). This usually happens if your player doesn't support