Hi,
To upload both excel and jpeg files
Add xls to the line; "$wgFileExtensions = array( 'png', 'jpg',
'jpeg', 'ogg', 'doc', 'ppt', 'mp3', 'xls',
'pdf' );"
"#use external mime detector(Linux)
$wgMimeDetectorCommand= "file -mbi";
Comment $wgMimeDetectorCommand= NULL;
This is what i have used and i am able to upload any type of file listed in
$wgFileExtensions
Regards
Vinay