General settings > Files
Contents on Files:
What kind of files can be uploaded?
For images the system accepts the most common formats: JPG, GIF, PNG. For flash files it accepts the SWF format. For audio it accepts the MP3 format. All the other formats (DOC, DOCX, ODT, XLS, XLSX, PDF, RAR, ZIP, etc.) can be uploaded as documents.
Maps and videos are not uploaded as files, they are linked to Google Maps and YouTube.