I like the feature. It's currently implemented in Itunes and Yahoo! Music
Engine and in a somewhat different fashion in the instant messengers.
Although WD now allows a permanent icon in the system tray and a transient
icon, the implementation could be improved via minimize to tray and better
tooltips.
Sorry, I should define minimize to tray. When the window is minimized, the
taskbar entry goes away. The window can be retrieved by clicking the system
tray (notification area) icon. Thiis technique leaves a little extra room in
the taskbar area for other currently running programs.