Zune users rejoice, 4.5 has been bestowed upon your PMP. Just plug in the device and get a syncing.
So what does it add? Smart DJ, which we showed you last week at the Zune House here in LA. Microsoft has also increased the codec compatibility of the player by adding AVI support.
I’m just waiting on Microsoft to kick out a Mac compatible build of their software so I can play with the super sleek device.