On the other hand, it would have been nice to have had a LPCM option. WAV files are produced in this format ... but I digress.
My real issue is that when I produce an MP4 video with the Dolby sound option and upload it for a friend to finish off (with music, titles, etc), it imports to Vegas as an audio file instead of video! However, if I produce the exact same file with AAC, it imports on his end just fine.
Bug? Limitation? Feature?