Music Upload PHP

[lives4him06]

I have two file upload forms. On the first i upload images and limit the file types to .jpg and .png with the following line of code:

 $type = $_FILES['userfile']['type'];
if (($type == 'image/png') or ($type == 'image/pjpeg'))
//assign file location etc

On the second upload form, i wish to allow the user to upload audio content. I would like to limit this content to .wma and .mp3. When attempting to upload the audio file for test purposes, so that i could retrieve the file type (ie: audio/wma or something of the like) i used the following lines of code:

 
$type = $_FILES['userfile']['name'];
echo $type;

this returns a null.

Is there a file type associated with audio files? If so what is it and what am i doing wrong?
If not then how can i limit my users to .wma and .mp3 files?

[Napster]

Go

$type = $_FILES['userfile']['type']; 
echo $type;

or

echo $_FILES['userfile']['type']; 

Hope that helps. I am not sure what the file types would be off head but I do know that it would be .wma or .mp3

[lives4him06]

ahh my mad, yeah thats what i did (typo in my first post) and the following came back null:

 $type = $_FILES['userfile']['type'];  

echo $type;

[lives4him06]

so it seems as if when uploading an audio file

$type = $_FILES['userfile']['type'];  

echo $type;
 

returns null?? Is this correct or am i doing something wrong??

[lives4him06]

I figured out that i am trying to determine the MIME file type of these files. I found an informative source on this

http://www.yolinux.com/TUTORIALS/LinuxTutorialMimeTypesAndApplications.html

as you can see .mp3 file extensions are

audio/mpeg3
audio/x-mpeg3
audio/mpeg-url
audio/x-mpeg-url

and from source

http://http://www.royalty-free.tv/rftv/streaming.htm

.wma files are

Windows Media Audio file
Content type (MIME): audio/x-ms-wma
Extension: .wma

why did my code (from my previous post) return a null??