Digital music players have become an integral part of our lives, offering convenience and versatility. This paper describes the architecture and implementation of a Java Swing MP3 player that provides an intuitive user interface for users to listen to local MP3 audio files. The player has standard features including loop functionality, next/previous song navigation, and play/pause buttons. Users can choose a directory holding MP3 files by clicking the ”Open folder” button, and those files are subsequently added to the playlist. For convenient selection, the song list shows every song on the playlist. Through the use of Java Swing elements such as text fields, labels, and buttons, the player offers a user-friendly interface. Reliability is ensured by using the Java Media Framework for MP3 audio decoding and playing. Moreover, future feature improvements are made possible by the player’s extensibility.