>>3
He plans on listening to it probably, people dig field recordings.
As for you
>>1, for any recording of a crowd that long there's going to be noise related to why the crowd is even gathered there, and not sure what kind of crowd you're looking for. Is it people cheering and chanting and clapping like they would at a concert? Or just the sound of a bunch of people standing around having a thousand isolated conversations that blend into each other into one gray-noisy sound? Anyways, my recommendation is to go to some large venue and have some field recording equipment, find a good spot to set it up (as in no proximity preference to any set of people) hit record and go shopping/take a shit/kill a hooker/whatever, and then retrieve your precious booty.