A player I've been using for a couple of months, and really liking, is Clementine http://www.clementine-player.org/ They claim it to be inspired by Amarok 1.4.
I really like the look of Clementine, but I'm still holding onto Amarok 1.4 because it works with Katapult. Does Clementine work with any launchers yet?
I'm using its nightly build PPA. I'm consistently amazed at just how rapidly new features are appearing in it.