DVD audio level is not equal after ripping concert dvd

[Bam-Bam]

Hi,

Wanted to test DVD2One and ripped a concert DVD (because of the lenght, 120 min.)

I noticed while playing the vob files on my pc the audio level was not equal but every now and then the level is not as loud as it should be.

Is this a copy protection?
Can I get around it?

Ripped the files with dvddecrypter and also with smartripper.

the dvd is "Kane - Live in Rotterdam" (hey, don't blame me, it was just a gift )

thanks in advance, Bam-Bam

[vric]

if the sound is 5.1, your computer sound will be lower.. it's normal.. it should work as normal on your dolby receiver.. All dvd do this to me

[Bam-Bam]

The lower sound on my pc is not the problem, that it's not equal is the problem.
Some music fragments are loud and others not (in the middle of songs)

I ripped the 5.1 sound but tried also the 2.0.
Same result.
With other dvd's (5.1 and 2.0) I never had this problem.