Moving Project Files

Hi, I'm trying to de-clutter my projects. I would like to take an existing project and save it as a new project and transfer ONLY the audio files that are on the arrange screen onto a new project folder. I have multiple takes of drum, bass, guitar and vocals. I've been splicing the best parts of those takes together. But I have GBs of audio files that I'd like to store on an external hard drive. Is there a way to do this. If not, no worries. Thank you.