Normally when a DVD is selected in the "Files" listing it will take you to a track listing of that particular DVD. If you have the DVDPlayback.framework installed (can be installed using the Smart Installer) and this selection is toggled on we will attempt to take you straight to the DVD menu. If the DVDPlayback.framework is NOT installed this setting will have no effect (we took out libdvdnav support from mplayer because it was hindering us upgrading to a better/newer mplayer)
NOTE: This COULD take a long time to load a DVD, ESPECIALLY if there is ISO/IMG (disc images) involved. It will LOOK like the UI is locked up but it isn't, just be patient.