After a discussion here (http://forum.gmusicbrowser.org/index.php?topic=612.0), I have made a new layout :
Standard view (the "+" in status open context panel) :
(http://pix.toile-libre.org/upload/img/1342910322.png) (http://pix.toile-libre.org/?img=1342910322.png)
Context panel (buttons on top to change panel : lyrics, queue, internet info, cover, file info and close panel) :
(http://pix.toile-libre.org/upload/img/1342910475.png) (http://pix.toile-libre.org/?img=1342910475.png)
Edit on 13th july : some init for album panel (was artist panel) changes
Edit on 22th july : many changes concerning context panel (how to show it and more)
New version, many changes