The Show of Hands email list are doing a 'video tree' - don't know the details - you can subscribe to the list from the show of hands website (I'll post the blick in a bit, but for now you can find it from a search I'm sure).
There will be an official video of the event available later on (september), but content will probably be different from the TV one. Sufficiently different apparantly for it to be deemed OK to pass around home-recorded vids without prejudicing sales of the official vid. The SOH email list are very concientous about copyright etc and tend to check with the band before doing anything like this - so don't nobody panic!

Kris