[Gtkradiant] [Bug 769] New: entity inspector sound picker does not set a file type

[gtkradiant@zerowing.idsoftware.com]

http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=769

           Summary: entity inspector sound picker does not set a file type
           Product: GtkRadiant
           Version: 1.2
          Platform: All
        OS/Version: Windows 2000/XP
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: editor
        AssignedTo: ttimo@idsoftware.com
        ReportedBy: jmonroe@ravensoft.com


the "sound" button brings up the file dialog without setting any file types so 
it wither either be blank if you didn't open a file, or more likely, set to 
(*.map;*.reg).
the "model" picker does work.  "Sound" should fill in (supported sound types) 
like model does.  (*.wav;*.mp3)