Aktionist Films

No you certainly should not because you'll be ripping off the artist and lining the pockets of the bootlegger. It's not like this is a Hollywood capitalist money machine that's being ripped off. I don't know if Muehl's films are 'released' as such. It is possible to get Kurt Kren's films, which often featured Muehl's performances from the Austrian imprint index (see http://www.index-dvd.at/en/program/001/index.html), and in the UK Lux distributes Kren's films (www.lux.org.uk)