There is a crowd called Force 10.
They throw free parties on Rathlin every year.
I think it sounds fantastic, I have never been, but have seen some photos, and it looks like a great weekend. They have a number of soundsystems heading over this year.
Anyway if anyone feels like this rocks their boat, they will have more details on their website nearer the time.

"First weekend of August (1/2/3rd) we Have 5
soundsystems confirmed, a session marquee, out
door main stage with the force10 rig in full
effect. DJ's from 3 continents.. plus drumming
circles, circus performers, healers, food tent,
and a whole host of mad hallions all you have to
be is self sufficent and as creative as you want
to be for 3 days."