How can I remove audio files to store elsewhere Samsung Galaxy core prime 5.1.1?

I was unable to use WhatsApp because of insufficient memory. My total memory is 8.00GB and the system memory is using 3.02GB. The used space is 4.60GB. I have audio files using 1.2GB. I uninstalled WhatsApp. I would like to reinstal it. Can I store the audio files elsewhere? Don't want to lose them but would happily use them on my iPad if I knew how to do it. Thanks

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