do you have a way to plug the camera into a computer ...the same way you watch it on your tv (live!)
hdmi, usb etc...
make sure it is the same connection (type/output signal) for your computer that streams the video ...for say you VCR ...but your computer
personally, i would go with some cheap ... camera (for say video conferencing) and get some high quality sound card/microphone (find someone with a nice karaoke machine)
the picture quality can be drab, but the sound would drive people crazy
you could alway ask the owner of this site to broadcast
creative labs (sound blaster) has software/sound cards that sample the sound in the room and filter out the niose with normal computer mics
rerunning your sound setup at the location might have the same effect... i've had three computers with the same software