That'll hinge on whether FFMPEG can do it, or whether Cockos can use the Quicktime libraries to extract the audio.
Video appears as an item in Reaper. To get both audio tracks out of one item, it might have to display them as takes, though I'm not even sure that is practical.
I'm highly suspect of Quicktime audio anyway, regarding it as little more than a guidetrack 99% of the time.
If the audio is important, requesting separate audio is probably a good idea, so no video editor can accidentally sample-rate convert it or truncate it to 16-bit.
Protools just extracts the audio, but it doesn't play it out of the Quicktime itself. Would you agree that Reaper should give the user the option to extract any 2nd or great audio track from a Quicktime ?
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