Previously obscure musical genres, traditionally mediated by tape trading, mail order and the like, become relatively public as they migrate into online environments. The niche is now easily available in 'pirated' format: mp3 blogs and post links to material which was previously only available on limited-run cassette or vinyl. Such material also circulates widely on peer-to-peer networks, and listeners can conveniently find each other and new bands through platforms such as Last.fm. One such genre is considered here: power electronics or 'noise'. The textual and visual material around power electronics is presented as a limit case for considering the grounds upon which censorship operated in Australia.