fault root password in Debian is 'root'. After you've logged in, you should change the root password and configure /etc/apt/sources.list to point to a Debian mirror near you.
MediaTomb is an open source (GPL) UPnP MediaServer with a nice web user interface, it allows you to stream your digital media through your home network and listen to/watch it on a variety of UPnP compatible devices.
The Debian Administrator's Handbook is a fantastic resource for all users of a Debian-based distribution. Accessible to all, this book teaches the essentials to anyone who wants to become an effective and independent Debian GNU/Linux administrator.
There are so many distributions of Linux. Some of those distributions go a very long way to differentiate themselves. In other cases, the differences are so minimal, you wonder why anyone would have bothered reinventing that particular wheel.