rhythmbox is a fairly easy to use itunes clone. it even minimizes to the taskbar so it doesn’t clutter up the screen. each new track will pop up a bubble showing the artist and title.misc links :
http://www.rhythmbox.org/ (currently down?)
http://www.gnome.org/projects/rhythmbox/
http://freshmeat.net/projects/rhythmbox/

yeah, i know, what’s the big deal if it’s just an itune’s clone? i’m just impressed with how well it’s integrated into gnome. ubuntu did a good job implementing gnome, it’s a nice clean interface.