As far as i'm aware the 3rd and 4th stages have only been fan translated... I'm almost definately sure that the 4th stage is only available fansubbed.
Seriously though, i support buying the DVD's to show support, and once you've bought them download the fansubbed versions, the musics better (cheesy but suits the type of program it is), the dialogues better even though i don't speak japanese, for some reason they've got the voices of what you'd expect on a 5 year old kids cartoon on the english version.