for Dolby On, share it to Google Drive or similar and then move it to your computer
for the Zoom, connect it via USB and copy or eject the sd card and read the card from your computer
open it in Audacity and locate the general area where your sound is located
copy that area out and paste it to a new file; we don't want to damage your original file, and it can be nice to have a new Audacity project for each sound