What was the music played during the preview?

The subject should say it all, but I was just wondering what the music was that played during the preview (that I downloaded from this page: http://www.hbo.com/films/stlm/?ntrack_para1=feat_main_image#). I think it may have just been regular HBO music, but I'm not sure.

Also, on the same track, I love the themes and music that HBO plays whenever they do "previews" of their current shows or upcoming movies, by just showing quick clips of different shows/movies. Is that music available for sale anywhere?

Thanks in advance for any help anyone can give me.

Amanda