I'm wondering if there's a way to crowdsource this with cellphones. I realize it's a little out there, but there are thousands and thousands of microphones alre

I'm wondering if there's a way to crowdsource this with cellphones. I realize it's a little out there, but there are thousands and thousands of microphones already blanketing every urban area ... edit: Google informs me of http://www.noisetube.net/ http://www.noisetube.net/