Extracting audio files from a PPTX presenttion

I have a PPTX presentation that includes audio files.  I would like to convert to aa Articulate Presenter file.  How can I extract the audio files for editing and placement in the Presenter file?   Have tried "Import Audio" and "Audio Editor" to no avail.  This is my granddaughters Girl Scout project and trying my best to assist.

Thanks

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