How can I extract audio files from an app? Is there any way I can extract audio files from an iOS app?  Would jailbreaking be required?

This would be relatively easy on Android, but I cannot figure out how to get the app onto a PC.

The reason I want to do this is simply because I have an iPad app that has some very nice alert sounds, which I would like to use for my desktop alert sounds, phone notifications and terminal bell (personal use only).
Use Apple Configurator 2 to update the app on your iOS device, but before disconnecting the iOS device, copy the iOS app out of the Configurator's temporary directory.  See: 

How do I download an iOS App (IPA) file to my Mac after iTunes 12.7 update?

for how to find this directory.  If the media assets of an app are not encrypted or obfuscated, you can sometimes find them by unzipping the .ipa file.