I'm not certain what I'm doing wrong.
I have a thirty minute .mts file recorded on a Canon handheld video camera.
When I bring it into Hitfilm Express the audio appears flat (no waveform). Playing and scrubbing have no audio at all. But if I bring the clip into VLC it plays with audio just fine.
I've checked that the timeline audio track (it's on track 2 for some reason) is not muted.
My computer is based on an AMD Ryzen 7 1700x with an EVGA 970 FTW video card, onboard Nahimic audio.