Uncomplicated program quickly plays MP3 files and/or copies them to USB devices (such as compatible mp3 players). Nothing fancy, just simple and fast. Player reduces to small window or icon in system tray, can save/recall playlists, remember what you were listening to last, and pause (up to 24 hrs.) between selections. Larger window shows files spanning directories. Music can be shuffled (without affecting how the files are actually stored).