I have a friend that does weddings, in fact he will be using my HD100 to shoot my wedding in a few months. Something he does which I thought was great is in addition to recording audio to the camera(s) he takes a feed from the house system and just lets it record to a HiFi VHS machine. At the reception he takes a feed from the DJ and/or Band and records it to the VHS deck. At least this way there is an uninterrupted version (Well two hours anyway) of the entire evenings audio events.