@ ptfitzy , I found a software I have to do this . The result is a 2 channel stereo .wav file.
The audio track on most DVDs is a 5.1(6channel).ac3.
That is if you set the rip to one Audio track . English for example .
I did seperate just the 5.1.ac3 track also.
Audacity wouldn't convert the full time as a 5.1 .wav . It would only do a 4 minute one & the size was huge . So definately not working for that. I will see if I can figure out why if possible.
I have a software that can turn the 6channel .ac3 into a 6channel .wav but it takes a lot of setting up & I don't know if all the files can be found on the internet now. It is an old program called BeSweet combined with a GUI called BeLight. However the resulting file is 4GB.
Even the 2 channel .wav I did from a Woodstock concert DVD is 1.38GB .
The time is 2 hours 4 minutes or 124 minutes .
Audacity can split this up. I just cut it in half.
The reason for this is an 80minute/700MB CD can only hold 80 minutes max & only 700Mb max . On an Audio CD the time is absolute you can have less than 700Mb but if the time is longer than 80 minutes it won't work.
If a person wanted to do the work each song could be done as a seperate track.
Then burned to a CD as a compilation. The half is just one track .
It came out as 1hour 1 minute & 674MB so could be burned that way.
If your concert DVD is similar it will take two CD Rs for it.
This is where to get the program for the 2 channel conversion if that is acceptable to you . The download is close to the bottom.
Download DGMPGDec 1.5.8
You will probably need some instructions but I want to make sure you want to do it this way before I post instructions.