To view a map's details select the map in the list and click the View Details button, or simply double-click on a map in the list. A window will open that has the name of the map and a list of files associated with the map. You can change the name of the map or change the associated type of individual files. You should only need to change the file types when you are experiencing a problem getting the map to play correctly.
When viewing the list of files you can click the Open File button (or double-click on an item in the list) to view the contents of a file. Group (.grp) files will be opened by DN Map Loader's Group Extract utility; midi, wav, and voc files will begin to play (click stop sound to stop them); map files will be opened with Build; other files will be opened by an appropriate application (i.e. txt files are opened with TextEdit). Opening the graphics files such as .art and .anm is not supported at this time.