If you want your station listed on Microsoft Windows Media Radio Tuner then drop an email to tuner@microsoft.com and ask Sally for a Radio Submission Form. You will probably wait a week or so for a reply, don’t worry, Sally is very busy.
You will be required to have a download link for Windows Media Player on your website. You will also require a direct link to your .asx file.
When you return the Radio Submission Form make sure that your email tells them something about the station. Ie; Is there anything distinguishing about your station?