There was sod all techno-wise in Prague the one time I've been there, but we did see a Kid Koala umpteen deck scratch set with a load of close-up cameras and screens set up all over the place which was one of the best sets I've ever seen.

Can't remember what the club was called but they had quite a lot of random interesting stuff on, it was somewhere in the north end of the old town (on the south side of the river).

That's not much use I know sorry