Today Sony Ericsson had posted a few new promo videos at the Sony Ericsson Official Website. These video  just only for Sony Ericsson R300 & R306 radio, R306, S302, T700. Maybe some of the videos you had already watched, but video for R300 and R306 Radio is totally new.
Firstly, Sony Ericsson S302:

Announced officially on 24th January 2008 at Delhi, India, this Sony Ericsson R300i is one of the Sony Ericsson phone that place the AM and FM radio frequencies with dedicated radio speakers feature as well as 3D sound and volume boost features. Come with only 0.3 Megapixel VGA camera, R300i has 65k colors, 128×160 pixel [...]

So here is it, a new radio type phone from Japanese-Swedish joint venture company, Sony Ericsson R306i. This R306i said was specially designed to deliver a credible radio-listening experience to a global audience. Support both AM and FM frequencies, R306i also built-in with two integrated stereo speakers and 3D sound enhancement.