Adrian Vinca, A few days ago, I've decided to give a try to the XNA CTP which allows creating applications for the Zune. So, I've started going through the tutorials and I've decided to create a Clock application. I know, XNA is meant to be used for writing games... but I always wanted to have a clock on the Zune :). I was impressed to discover that the Zune has an internal clock, which works even when the Zune is shut down. The only issue I had was that the time was a little bit off, and there was no way to set the internal clock. So I've added the ability to "adjust" the time displayed. Basically, you define an offset which gets applied to the hardware clock. The value gets saved so that the next time when you start the application, it will still show the correct time.
Zune Clock 1.5 adds some media player capabilities to the player.