G1 not accepting .wmv files

Gallery version:1.5
Apache version:dunno
PHP version: 4.4.1
Graphics Toolkit:Frontpage?
Operating system:Win XP
Web browser/version: IE v6

Hello

My Gallery is not accepting .wmv files. I have it written in the util.php file for viewing and my host said it supports it. I also have a load of different Windows Media Player formats in the util.php file (yes, including wmv):

function acceptableMovieList() {
    return array('asx', 'asf', 'avi', 'mpg', 'mpeg', 'mp2', 'wmv', 'mov', 'qt', 'swf', 'mp4', 'rm', 'ram', 'wax', 'wm', 'wmx', 'wma', 'wvx', 'mpv', 'mpa', 'mps', 'm2v', 'm1v', 'mpe');
}

I also tried writing ,'.wmv' in the file. No luck.
When I do upload a .wmv file WMP does not come up as normal. I just get an error IE page. .avi and .mpeg files are working tho. It's very stange, but above all, annoying.

Someone plz help me!!

Thanks.
Ice