The way I took alot of the guides I saw was that you only had to leave AC3 5.1-ch English and all the sounds of your DVD would work. However, I have done this on several burns and some of the extras are without sound. What is the problem here? I must be misunderstanding the instructions.
You can leave 5.1 in but you have to have a high quality player/stereo system. If you don't then the 5.1 option won't do you much good.
See when I replay certain extras in my DVD Drive on my PC and in my PS2 they will not have sound. All I left on the disc was AC3 5.1. So on the next movie I am doing....It should look like this?
A lot of times the extras do not have ac3 5.1 audio streams and therefor you need to check the ac3 2-ch also for whatever language you desire.
I rarely use shrink anymore but regardless of the transcoder or encoder used I usually keep all the english audio streams except dts. As you can see the ac3-2ch streams don't take up much space. Some might disagree but I usually keep some extras and don't want to chance loosing the audio streams for them.