Banshee is an open-source media player, originally called Sonance until 2005

Banshee
Built upon Mono and Gtk#, it uses the Helix and GStreamer multimedia platform for encoding and decoding various media formats, including Ogg Vorbis, MP3 and FLAC. Banshee can play and import audio CDs and supports many portable media players, including Apple’s iPod, Android devices and Creative’s ZEN players.

Other features include Last.fm integration, album artwork fetching, smart playlists and podcast support. Banshee is released under the terms of the MIT License and is available for Linux as well as Mac OS X operating systems.
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Install latest version of banshee music player in ubuntu 10.10/10.04/9.10

Applications > Accessories > Terminal:

$ sudo add-apt-repository ppa:banshee-team/ppa
$ sudo apt-get update
$ sudo apt-get install banshee

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web:
http://banshee.fm/