Colored buttons, rounded windows?
I'm running the metacity window manager with gnome2 and I'm not seeing rounded windows (maybe not possible with metacity?), nor am I seeing colored window widgets. So the screenshot is a it out of date. Colored window widgets would be nice, they don't need to be OSX's colors mind you, they're currently grey--with "- + x" as your hover over them.
Pretty theme overall, I'll probably end up modifying this theme a bit to suite me.
Add this to your /etc/apt/sources.list, then apt-get update;apt-get install beep-media-player. Dunno who's doing those packages, I just figured it out from the url here on freshmeat.
deb http://luon.net/debian unstable main