AC3 endoding from WAV files

[lalittle]

Does the "Multichannel Plug-in" that Nero offers give the ability to encode to AC3 from WAV files? If so, do you do this via the "Encode" window? Is this an officially "certified" AC3 encode? I've read that some AC3 encoders are not officially certified, which can potentially lead to playback problems on certain decks.

Also, the plug-in page says "The Multichannel Plug-in is included in the Nero 6 Retail Box and the web version." I bought the retail box, but I don't seem to have this plug-in. Where should I be looking for it?

Thanks,

Larry