Amarok is a free, versatile and powerful music player.

Features

• Dynamic playlists matching different criteria
• Collection managing with rating support
• Support for basic iPod, MTP and UMS music player devices
• Integrated Internet services: last.fm, Magnatune, Jamendo, Ampache, mp3tunes and more.
• Scripting support
• Cover manager
• Replay gain support
• (more at http://amarok.kde.org/en/features)