I'm running DVDA 3.0, and although I normally use AC3 for my Menu Page audio, I tried to choose an MP3 just for the heck of it one day. DVDA balked - said it couldn't decode the stream or something like that! Vegas 6 is installed on the same machine, and it loads the this MP3 just fine, so what could be the deal? Note that I had a friend of mine try the same procedure, and it worked without a hitch from both Vegas 6 and DVDA 3. Stange...very strange indeed.