[Plugin: PDF and PPT Viewer] If WP is in subdirectory you may have to edit

If WP is in a subdirectory and this plugin is not working you may have to edit line 14 return get_bloginfo(‘url’) in ppt-pdf-viewer.php to show the correct path. Once I did this the plugin worked.

http://wordpress.org/extend/plugins/pdf-and-ppt-viewer/