If you are looking for a AC3 decoder plugin for nero or is just curious about why the video playback on Nero Recode is so perfect yet, there is no sound here's the answer:
Nero's 5.1 Dolby plug-in is nothing more than a Serial Number to unlock the feature which already exists... however is hidden.
So if you think you can just download Nero's 5.1 Dolby plug-in from any P2P Sharing Network in form of *.DLL or a Self-Extracting file, think different.
I bought it. It is really worth the money.