Compliant with Xbox360/PS3/iPads/Mobile Devices/etc. devices that require the primary Audio stream to be AAC Stereo (many do not accept/work with AAC 5.1 format). Audio Stream 2 available to those that also wish to experience great 5.1 sound that goes right alongside great picture quality.
For those experiencing LOW VOLUME issues, try to playback the 2nd Audio stream in stereo mode, this should improve audio quality and increase the volume substantially.
If you wish to experience 5.1 audio on the original PS3 or Newer PS3, Just select the audio options and ensure the 5.1 stream/track is selected.
PC Users will have to use something like VLC that allows you to choose the 2nd Audio stream/track, Depending on your configuration, vlc should automatically enable 5.1 playback after the track change, but double check by selecting AUDIO ~ Audio Device ~ 5.1
Thank you..nice movie and nice copy