[4] In 1958 Rudnik started working in the Experimental Studio of the Polish Radio, the fourth such facility in Europe, founded and directed by Józef Patkowski.
As a composer Rudnik created almost 100 works in studios of electronic music in Warsaw, Stockholm, Cologne, Paris, Bourges, Baden-Baden, Brussels and Ghent.
They were presented on various radio stations throughout Europe and in many countries, as well as at many festivals in Warsaw, Wrocław, Finland, Zagreb, Stockholm, Berlin, Paris, Arles, and other sites.
He received the Warsaw Golden Badge of Honour for services to Warsaw (1987), an honorary radio award at the Festiwal Mediów "Człowiek w zagrożeniu" in Łódź for the "eternal and universal values of the human being documenting the threats of modern civilization" (1991), the Euphonia d'or prize in Bourges, also for Mobile, the Golden Microphone Award for "valued worldwide achievements in the field of radio art and experimental autonomous music" (1993) and the first prize (shared with Maria Brzezińska) at the XVII Międzynarodowy Katolicki Festiwal Filmów i Multimediów in Niepokalanów, and at the "Dwa Teatry" festival in Gdańsk for Przyjaciółki z Żelaznej ulicy (2002).
On 27 October 2012, at the Soundedit Festival, Rudnik received Człowiek ze Złotym Uchem award for "pioneering work in the field of music production".