Hi Greg,
Yes, this has been an ongoing issue with M100 over the years. You can mix video, but not audio. I asked this specific question on the M100 v2 webinar last week, and they confirmed, no mixed audio rates.
This is big problem for us, as we restore and update old projects all the time, and back in the day, M100 used a different audio standard.
To any of the M100 folks out there, even a simple offer to conform the audio clip to the program’s sample rate would be very helpful.
ken