My Blu-Ray Marantz BD8002 incorporates a secondary audio and video decoder that allows for simultaneous playback of a secondary audio and video track which may be used for interactive audio and commentary and for picture-in-picture capability (respectively). Additional information (subtitles, audio streams, camera angles, trailers, games, etc.) can be downloaded from the Internet via computer and stored on a SD card that either player will accept. This content can be played with the original content of Blu-ray Discs.
It is necessary for me to audio and subtitles.
How I can add audio & subtitles
What in this case structure of folders on a SD Card