It appears that this video camera records the Audio as;
24-bit / 96kHz linear PCM sound
The rich stereo sound captured by the Mid-Side mics can be recorded to linear PCM WAV files. When taking full high-definition 1080p video, high-quality sound with resolution of up to 24-bit/96 kHz can also be recorded.
While I have not ripped that particular Audio Stream, I would think that the free Audacity (Audio-editing program) could rip the Audio Stream from the multiplexed AV file. Then, one could Save_As (Export) PCM/WAV @ 48KHz 16-bit, which will Import into PrE, and edit nicely.
Good luck, and please let us know if Audacity can do, what I think that it can do, with this material.