Burn CD/DVD in Windows Media Center

The first time I burned a DVD it asked me to choose a DVD playback setting.
To start with DVD menu or play video in a continuous loop. I never saw that
option again. I want to burn my DVD to play in a continous loop. How do I
reset it to do so.

Also
Windows DVD Maker. I try to add pictures and videos but can't find the
files. Where do they locate the file at.