Ok, so it sounds like Audition doesn't support the video or audio codec used in your MPGs.
What are you trying to do with the file? Do you want to add your own audio to the video? Or do you want to save the audio separate from the MPG?
Thanks, your probably right. I am using a Sony Handycam with an in HDD, do
I have to see what my limited options are for downloading and conversion. I
have narrowed the source of the hum I am trying to eliminate as being
specific to one soundboard at the church. the other gives me no problems at
all, so I may not need to use the program much.
Have you tried Premiere Pro's "Edit in Adobe Audition" feature? This should be a quick way to get the audio into Audition so you can remove the hum.
"When applying the Edit In Audition command to clips in a sequence, Premiere Pro renders the audio into a new audio clip that is imported into Adobe Audition."
"how to send a sequence from Premiere Pro to Audition or how to send a completed mix from Adobe Audition back to Premiere Pro"