What audio can add to a story

One website I found that makes good use of audio is the abc network's homepage. As soon as you open this web page, audio comes on right away; you hear all about the current programs on abc and when you can watch them. This adds a lot to the site. First, the site viewer immediately knows what shows abc has to offer without having to click anything. Also, their audio serves as extra advertising for the network and may help bring in viewer to other abc shows. However, I do think abc could improve their audio just a little bit. While it is attention grabbing and helpful, their audio tends to get annoying after a while. It seems like it will never end! So, the only thing I maybe have more in their audio so the same things don't play over and over.