I notice the scrolling stops and isn't continuous through the song. Could it still scroll during the song?
The reason is that often you're listening to a song on an album and think "Oh this is good, what song is it again?" but because the scrolling has stopped you have to find some way to get the song title (hover over tray icon; maximise MB; etc).
I think continuous scrolling is bad: visual noise; extra processing (however small) drain for laptops; no need
So, how about "Scroll on demand" - if you hover anywhere over the mini-player it starts scrolling?
Just a suggestion