Sorry but I don't know how to find any audio clips with Jennifer Aniston's voice and I suck at technical shizznit! If there was any way to get some audio clips from the movies she's acted in then I'd suggest some to you, but I don't even know if that would work. There's tons of stuff she said in Friends that'd probably be some great material. I'm curious about what Hilary Duff would sound. I don't like her....but I have the creeping suspicion that her voice would be a good fit.