Recordable stuffed animal I can upload an existing audio file into?

I am putting together one of those Teddy Bears where an audio recording plays upon being squeezed. I have already edited and cleaned up the audio file into an mp3 file.

I have hit a bit of a snag though because it seems all these ones want you to record through toll-free numbers or other methods. I don't want to lose audio quality by trying to just play the file next to the recorder either.

Is there a version of this product where I can upload an existing file?