Just tried it out, looks nicer but some things I'd think would be good changes:
Shift state of pause button to a play icon so you know whether the song is paused or not
The wrench icon does not do anything(perhaps it's for settings?)
Also the playlist icon does nothing(also, a different icon would be better IMO, looks more like a book than a playlist)
And showing "Now Playing: <artist> - <title>" in small(maybe 8 or 9 pixels) text on the top along with the % buffered would be awesome
And maybe sorting of song and artist columns(showing album would be good to)
Also resize the little bar on the bottom, it takes up more space than the button uses = less space for playlists
And enter does not work to search anymore
And maybe you can do it like this: If you press enter to search it will jump to the first entry so you can navigate using the keyboard and press enter to play?

EDIT: Oh and log on support would be great, but I guess you may be already working on that part?

Nice work by the way, very appreciated.

EDIT2: The [X] to the left of the search box should be moved to the far right too, IMO