Media Submission portal error

Ok, I have a Medi Submission Portal, where I want users to be able to submit .swf's and .wmv's.

I am having trouble just letting them upload .swf'd and .wmv's.

I have this code:

$types=array(".swf",".wav");

$title=addslashes(strip_tags($_POST['title']));

$desc=addslashes(strip_tags($_POST['desc']));

$wide=addslashes(strip_tags($_POST['wide']));

$high=addslashes(strip_tags($_POST['high']));

$cat=addslashes(strip_tags($_POST['catergory']));

$tac=addslashes(strip_tags($_POST['terms_and_conditions']));

$max_filesize = 5000000;

$filename=rand(500,2000).$_FILES['file']['name'];



if ($title == ""){

echo "Field title left blank <a href='?'>Go back?</a>";

}

elseif($desc == ""){

echo "Field desccription left blank <a href='?'>Go back?</a>";

}

elseif ($wide == ""){

echo "Field width left blank <a href='?'>Go back?</a>";

}

elseif ($high == ""){

echo "Field height left blank <a href='?'>Go back?</a>";

}

elseif ($cat == ""){

echo "Field catergory left blank <a href='?'>Go back?</a>";

}

elseif ($tac == ""){

echo "You must agree to the terms and conditions! <a href='?'>Go back?</a>";

}

elseif (!is_numeric($wide) || !is_numeric($high)){

echo "Field width or height false <a href='?'>Go back?</a>";

}

elseif ($_FILES['file']['name'] == "") {

echo "Field flash file left blank <a href='?'>Go back?</a>";

}

elseif ($_FILES['file']['size'] > $max_filesize){

echo "Error! flash file must not be bigger than 5 MB <a href='?'>Go back?</a>";

}

elseif (!strpos($_FILE['file']['type'], $types,-4)){

echo "File type not accepted";
}]

And so on, that is all that should be needed here.

This code, unfortunatly, wont let any files through.

What is the problem here?

Ok, I have checged it a bit, I now have elseif ($_FILES['file']['name'] != $type){