Need help to find "invisible" audio stream

[Mentalmummy]

I have a DVD and am trying to rip the audio commentary so I rip to pc the movie using DVDdecrypter then play the vob in VLC media player. That says the commentary I want to rip is the fourth audio stream though according to the stream list below there are only three audio streams:

0x20 - Subtitle - English - [SubPicture 01: Wide/Letterbox] / LBA: 7655 / PTS: 00:00:26.167 / Delay: 25880ms
0x80 - Audio - AC3 / 6ch / 48kHz / DRC / English / LBA: 69 / PTS: 00:00:00.287 / Delay: 0ms
0x82 - Audio - AC3 / 2ch / 48kHz / DRC / English / LBA: 71 / PTS: 00:00:00.287 / Delay: 0ms
0x89 - Audio - DTS / 6ch / 48kHz / DRC / English / LBA: 70 / PTS: 00:00:00.287 / Delay: 0ms
0xE0 - Video - MPEG-2 / 720x576 (PAL) / 16:9 / Letterboxed / LBA: 1 / PTS: 00:00:00.287 / Delay: 0ms

Which ever ac3 stream I rip using besweet it is always the main movie audio track and as far as I can see the commentary should be the 2 channel ac3 stream. Stream 0x82 is the main audio track again but with a duller sound as if someone is supposed to be speaking over the top but isn`t.

I`m sure I am missing something obvious, any ideas?

I do not know why vlc shows it having four audio streams but would a retail dvd audio commentary track be dts, I thought they were meant to be ac3?

Thanks.