Zune 3.1  Microsoft today released a minor upgrade to its Zune 3
PC software (see my review) and device firmware (see my review),
bringing the version of both up to 3.1. Zune 3.1 doesn't offer
any dramatic new functionality, but it does provide new games
(for the device only), a new Zune Social feature, and various
performance and stability improvements. Let's take a quick look.
New games  Zune 3.1 includes three new device games, Checkers,
Space Battle, and Sudoku, bumping the total number of Zune games
up from 2 to 5. (Games that shipped with Zune 3 include Hexis
and Texas Hold 'Em.) Microsoft has also updated Texas Hold 'Em
pretty significantly, adding a new multiplayer mode and single
player difficulty levels.  Here is how Microsoft describes the
new games.  Checkers - the eternal strategy challenge you can
learn in minutes and play for life. Play the classic game or try
suicide mode, in which the first to lose all their pieces wins.
Survive as long as you can against increasingly aggressive waves
of al