The first player to be able to read the MP3 format was designed by the same Fraunhofer Institute in 1990's. A Croatian student named "Tomislav Uzelac" developed "AMP MP3 Playback Engine" in 1997. It represented the first device that could be called MP3 player. After the player appeared on the Internet, two students named "Justin Frankel" and "Dmitry Boldyrev" transformed it into Winamp. They took the engine of the original player and added the interface of the famous Windows. 