I have chats to my belly and belly rubs. My DH will give my belly little tickles and rubs but doesn't get the whole talking thing to it yet. He read in a pg book that they can't hear yet so he doesn't bother. I prefer to because I'm sure that even if baby can't hear me, they would be able to 'feel' the talking.
Can't wait until we can have more interaction in a few weeks time... Definately going to do the music thing, we listen in the car on the way to and from work (hour each way) so theres some music time with bubs.