[delinend]

Btw. I use omxplayer.

Are you sure you are using omxplayer? The default for dvd images is now dvdplayer.
Check whether the codec overlay ("o" key) Has "amp: 0.00" at the end (omxplayer does, dvdplayer does not).

Arr... missed that

Are the best way to switch back to omxplayer, via advancedsettings.xml, and set this ?

Code:

<advancedsettings>
   <video>
     <defaultplayer>omxplayer</defaultplayer>
     <defaultdvdplayer>omxplayer</defaultdvdplayer>
   </video>
</advancedsettings>

Thanks popcornmix