aTunes is free audio player, working in such operating systems as Windows, Linux, FreeBSD, and Mac OS X. The program plays MP3, MP4, Ogg and Vorbis, WMA, FLAC, WAV, APE, MPC, cue files, mac. and other files. It also supports synchronization with online radio. One can open and save playlists in M3U playlist format. It is worth noting that when user connects to the Internet, aTunes can display lyrics of the current song.