Dynamic .wmv creation

[artemis]

Hi

How would you dynamically create a .wmv file? The content wouldn't be a movie but a playlist in the form:

<ASX Version="3.0">
<title>Title</title>
<entry>
<title>Song</title>
<author>Artist</author>
<moreinfo href=""/>
<Ref href="file"/>
</entry>
</asx>

Thanks