Also, a little thing I noticed, maybe a bug; when syncronizing or doing background tasks the status text in the progress bar is black which makes it almost impossible to see on the dark background...
Edit; just another little thing I'm being picky here

: It would be nice if the track# in the player could be made smaller/less obvious, now for a lot of tracks it might look like a part of the track name. I mean it already shows the "x of y" to the right of "album" so it does not really need to be there (IMO), just the track title.