Actually coffetiviti is free and you can eavesdrop... Australians even complained about American accents and wanted a coffee shop tailored for Australians, which I personally found hilarious, while a rabbi wanted the distinct hum of Hebrew. I quote the article here, did the link not work?
I agree with Bill though, listening to music is my usual way to find my creativity, but the comparability between which music we listen too and what noises they choose for coffetivity is very interesting IMO. Might be my inner geek, lol.