Matt, my understanding is that the camera records the AVCHD and 1080p50 formats with 5.1 audio, and the iFrame format with 2-channel audio. The clips I’ve imported have either been AVCHD or 1080p50, which is why I was expecting to see 5.1 audio.
Very happy to let you have a sample clip. What format would you like, and what’s the best way to get it too you?