can't recognise file after exporting wav with Reaper


as I love the stretching algorithm of audacity, I want to use it with my sound files.
However, I tried to export a sound file with reaper with this specification:

Sample rate: 44100
Channels: mono
Resample mode: Extreme HQ
WAV bit: 24 PCM
Large files (mine is 1 GB): Auto WAV/Wave64

The file is streamed by the QuickTime player, but can’t be opened by Audacity because the file type is not recognised.
Does anybody know why?


That’s a little odd because I thought Audacity automatically used QuickTime Services.

Do you have FFMpeg installed (scroll down)?