I haven't heard the soundtrack for this yet, but there is a song out there by a handsome and talented singer/songwriter with the same name as the movie... they're completely unrelated, but it's DEFINITELY worth checking out...
Even though they have nothing to do with each other, if you're into the movie or the series you'll love all the songs on this album, not just "sex and the city."
If the links aren't working just search the stores for "jay morgans" and it'll turn up. Feel free to let me know your thoughts!