iTunes is a free application for Mac user. It plays most of all digital music and video. It syncs content to your iPod, iPhone, and Apple TV.
a. manage your music into playlists
b. Edit file information
c. Record compact discs
d. Copy files to an iPod or other digital audio player
e. Run a visualizer to display graphical effects in time to the music
f. Encode music into many different audio formats.