my Android smartphone as FM radio "via speaker"

I have had mobile phones / smartphones with "FM radio" applications for quite a while now, and I had also learned, that they use earphones as antenna / aerial. Somehow I had implied, that would mean I would have to listen to the broadcast via earphones. I took me a while to let the idea grow, how nice it would be to be able to listen to the broadcast via speaker nevertheless. Well, the "FM radio" application on my Samsung Galaxy SII already has that feature. Nice. That way I don't need to waste bandwidth for streaming my favourite broadcasting stations over the Internet any longer. If I had only known that for a little longer! What a waste! I am so embarrassed.