The extra width is taken up dark grey columns with proper black Borders above and below.
The transport bar disappears, but the odd bars remain
the reason I didn't take to it was the large type of the tracks meant you could barely see two dozen tracks at a time, and few columns of information. The zune software takes up half the screen with blank graphics.
What I like about iTunes us that I can chose the columns of info I need in the order I want.
The other good thing about iTunes is video playback, cmd f plays full screen mode, cmd 1,2,3 switches between fit to biggest dimension, stretch to fit and actual size.
Couldn't find those options in zune.
Will try again, see if it works any better.