Aurednik began his football career as a
goalkeeper for the small club, Sportclub Staatsfabrik and was soon used as field player due to his footballing skills. Initially as a right wing-back, he transformed himself into a striker and received his first professional contract with
Rapid Wien in 1935. In 1938, with the Hütteldorfers, he won the last championship in Austria before its annexation to the
German Reich. From 1938 he played for several years at
TuS Neuendorf and in the meantime briefly played at Spandauer SV, the lower-class club Rot-Weiß Iserlohn and at LSV Wolfenbüttel, before moving to MSV Brno was transferred to the Protectorate of Bohemia and Moravia. However, he played with the Brno team in the Gauliga Sudetenland, which he won with his club in 1943 and could therefore have played in the final round of the German championship. But after a short return to Rapid Wien, Aurednik was transferred to LSV Markersdorf in the same year and reached the "reception club for drafted football professionals", as the Wehrmacht club was also called, and the already players like
Karl Durspekt,
Karl Sesta,
Max Merkel,
Walter Dzur and
Paul Zielinski, achieved sixth place in the East Mark
Gauliga in the 1943–44 season. In 1944, however, Aurednik was able to return to Rapid, where he stayed until 1946. With the green and whites he also became the first Austrian football champion and cup winner in post-war Austria in the 1945–46 season. As a left winger, he contributed 28 goals in 20 championship games and 7 goals in 3 cup games. In 1946 he finally went abroad in France and joined
CO Roubaix-Tourcoing, where he was only able to play in the reserve team due to the lack of approval from the ÖFB, but was also involved in youth training. He returned to Austria in 1948 and, after his pardon, played for
Austria Wien six months later. There, as a left winger in combination with his elegant connecting striker Ernst Stojaspal, he formed the best striker in the league and was quickly able to build on his old goalscoring qualities. With the Violets he won the Austrian championship title three times in 1949, 1950 and 1953 and also the cup competition in 1949. Aurednik, who was nicknamed "the magician" by fans, became known primarily for his scissor jumps, which literally confused his opponents, and for the famous "railway worker insult" (pushing the ball back and forth with the sole of the foot). In terms of his stature, he was a lightweight, but technically highly gifted and extremely strong in sprinting. His speed also gave him his name “Harry”, which stuck to him after a game against an English team. Because of his strength, the British fans celebrated him with calls of "hurry, hurry", which then became – loosely translated in Viennese – "Harry". After becoming player-manager at the lower-tier SC Austria Lustenau in 1953, Aurednik went to France again in 1954, where he initially played for
Lens for two years and scored six goals in 29 appearances in the
French Division 1 in his first season. In the 1955–56 season he and his team reached the runner-up position alongside
Erich Habitzl, where he was used 15 times in the 34 game rounds. From 1956 to 1958 he was active in
Division 2 at
Le Havre and scored 12 goals in 60 championship games. ==International career==