I'm attempting to put an AC/DC Live At Donnington DVD on to my N810.

Using DVD Shrink, I end up with .VOB files. Nokia Media converter will not accept these VOB files unless I change the file extension to .mpg/ mp2 or some such.
Having done this, a double click on my desktop loads them to Windows Media player and they play fine with sound.
I then drop them to Nokia Media Converter which takes the renamed .mpg file without complaint, converts it to good video and when copied to my N810 plays it nicely. Except, no sound.

Has anyone else come across this? Other files I have copied, my own movies in .avi or .mov have converted with sound.

I'm also surprised that other people don't mention the need to change the file extension from VOB to mpg before NMC will accept it. Or does it accept VOB in other people's setups?