5.1 vs 3/2 (2 channel) audio

[ecc]

I have a disc with two 5.1 and 2 2.0 audio tracks. In Main Movie mode, DVDFabDecrypter identifies the 5.1 tracks as such but calls the 2.0 tracks 3/2. According to Afterdawn, 3/2 "refers to either a Surround Sound encoding format utilizing 3 front channels (Left, Right, and Center) and 2 rear or surround channels (Left Surround and Right Surround) or a matching speaker configuration."

Does that mean that the 2.0 tracks are 2.0 surround rather than 2.0 stereo tracks? I mean, is the 3/2 designation a way - for those of us who still have only a stereo setup - of recognizing whether a 2.0 track is left-right or LCRS? VLC Media Player recognizes 2.0 Dolby Surround tracks as such and has an output option for those discs (you can set it to force Dolby Surround detection or recognize it automatically) but it only offered stereo and under outputs for the 2.0 and 5.1 tracks on this disc (does this mean that these tracks were not flagged during encoding for surround playback even though they are surround files?)

[minidv2dvd]

3/2 is usually dts audio.
2.0 is ac-3. it refers to left and right with no sub. surround sound can sometimes be extracted from the 2 channels by the amplifier, if it's encoded, but it's not discrete.

you can tell by the size of the audio file if it's dts or ac-3 2.0. if it's dts the file will be larger than the 5.1 audio file.

try dvdshrink on the disc, it's pretty good at identifying the contents.