Amarok

Amarok is a free, cross-platform, versatile, powerful and feature-rich music player and collection manager.

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, Ampache and more.
• Scripting support
• Cover manager
• Replay gain support