I have Roxio Easy Media Creator 7 and a CG animation program called
LightWave which outputs silent .mov files in a variety of compression
settings, including motion JPEG-B. I record the files in the 720x480
format for DVD viewing.

The package says that I can output in the ".mov" format, and I wonder
if this means I can somehow load one of my animatyion files, add
sound, and output the new file as a Quicktime.

If this isn't possible, what is the minimum I need to buy to do this?
Quicktime has a Pro packge for $30 that I'm pretty sure does it, and
an
MPEG-2 add-on that I don't know if it does it.