Small Preview Window Phyton Scripting

Hello,

I started with some phyton scripting for my xbox but one part I can't solve or find on the Internet. It's about a small preview window which is located on the left bottom corner of the screen when a "radio stream" is running. I think it's a basic feature in xbmc but I don't know how to enable it in my script. So please help this wannabe nerd...

Thanx in advance

Regards,
Edwin