Sound is jibberish

I am trying to split up a huge file of a courtroom session that I need to transcribe and load onto my transcribing system, but when I import the file onto Audacity, the sound is super fast and just jibberish. How can I get the sound to be normal?

Audacity won’t open up very many exotic sound formats by itself. You can add the FFMpeg software to open up a lot more.

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