--- loncom/interface/filetypes.tab	2008/01/15 17:17:42	1.33
+++ loncom/interface/filetypes.tab	2013/10/02 20:12:40	1.38
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # file extension description file
 #
-# $Id: filetypes.tab,v 1.33 2008/01/15 17:17:42 www Exp $
+# $Id: filetypes.tab,v 1.38 2013/10/02 20:12:40 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -974,6 +974,7 @@ fit             unk    unk
 fix             unk    unk              Generic Patch File
 fky             unk    unk              Foxpro Macro
 fla             unk    unk              Macromedia Flash Movie
+flv             unk    unk              Macromedia Flash Movie
 flb             unk    unk              Papyrus Format Library
 flc             unk    unk              AutoDesk FLIC Animated Picture
 fld             unk    unk              Charisma Folder
@@ -3259,7 +3260,7 @@ wmv		emb	video/wmv
 mp1             unk     audio/mpeg                       MPEG Audio Stream, Layer I
 mp2             unk     video/mpeg                       MPEG Stream, Layer II
 mp3             unk     audio/mpeg                       MPEG Audio Stream, Layer III 
-mp4             unk     audio/mpeg                       MPEG Video 
+mp4             unk     video/mpeg                       MPEG Video 
 mpa             unk     audio/mpeg                       MPEG Audio Stream, Layer I, II or III
 mpg             emb     video/mpeg                       MPEG Movie
 mpeg            emb     video/mpeg                       MPEG Movie 
@@ -3284,3 +3285,9 @@ xlw             unk     application/vnd.
 ics             unk     text/calendar                    iCalendar File
 wks             unk     application/vnd.ms-works         Microsoft Works 
 wps             unk     application/vnd.ms-works         Works Text Document
+pptx            unk     application/vnd.openxmlformats-officedocument.presentationml.presentation       Microsoft PowerPoint Presentation
+ppsx            unk     application/vnd.openxmlformats-officedocument.presentationml.presentation       Microsoft PowerPoint Presentation
+docx            unk     application/vnd.openxmlformats-officedocument.wordprocessingml.document         Microsoft Word Document
+dotx            unk     application/vnd.openxmlformats-officedocument.wordprocessingml.template Microsoft Word Document Template
+xlsx            unk     application/vnd.openxmlformats-officedocument.spreadsheetml.sheet       Microsoft Excel Worksheet
+webm            unk     video/webm                        Audio Video WebM File