Amarok has the capability to show the current track when the mouse pointer is behind amarok icon in Task Bar, but when Media Control is installed in a KDE Bar, this info is shown in this Media Control applet instead of in amarok icon (see the image attached for seing)
Created attachment 93015 [details] Info Showing in bad place This info should be shown in amarok app in the Task Bar.
Report this on KDE bugzilla, sounds like an upstream issue.