pdf

Adobe Reader

http://get.adobe.com/reader/

xls

Microsoft Excel Viewer

http://www.microsoft.com/downloads/details.aspx?familyid=1CD6ACF9-CE06-4E1C-8DCF-F33F669DBC3A

xlsx

Microsoft Excel Viewer

http://www.microsoft.com/downloads/details.aspx?familyid=1CD6ACF9-CE06-4E1C-8DCF-F33F669DBC3A

ppt

Microsoft PowerPoint Viewer 2007

http://www.microsoft.com/downloads/details.aspx?FamilyID=048DC840-14E1-467D-8DCA-19D2A8FD7485

pptx

Microsoft PowerPoint Viewer 2007

http://www.microsoft.com/downloads/details.aspx?FamilyID=048DC840-14E1-467D-8DCA-19D2A8FD7485

mp3

Microsoft Windows Media Player

http://www.microsoft.com/windows/windowsmedia/

mp4

Quicktime

http://www.apple.com/quicktime/

doc

Microsoft Word Viewer

http://www.microsoft.com/downloads/details.aspx?FamilyID=3657ce88-7cfa-457a-9aec-f4f827f20cac

docx

Microsoft Word Viewer

http://www.microsoft.com/downloads/details.aspx?FamilyID=3657ce88-7cfa-457a-9aec-f4f827f20cac

wpd

Microsoft Word Viewer

http://www.microsoft.com/downloads/details.aspx?FamilyID=3657ce88-7cfa-457a-9aec-f4f827f20cac