http://www.indiafm.com/cgi-bin/trailors.cg...strl/rstrl2.zip
Here is a trailor of Rok Sako To Rok Lo. Shaan is singing for Yash Pandit (like he did in Yeh Kya Ho Raha Hai - remember that song Yeh Sama). Abhijeet is cosinger and I think Babul Supriyo might be in the full song as well.