I don't know myself - can't think of the trailer you mean. But you could try e-mailing them

viewerr@bskyb.com

and asking. Remeber to tell them the date of the trailer, so they can check. You never know

I did get it in the end Filled in a feedback form at skymovies.com and got a reply

and the answer is?

Ian Brown - Fear (UNKLE remix)

thats such a good tune!