There are four concepts of the competitive forces models: new market entrants, substitute products and services, suppliers, and customers. In terms of customers, Soundbuzz were really well responded to situation that they faced. When they launched B2C model, they found that because of customers` behavior (customers are seeking to download music freely) they cannot make much margin compared with the time when they used B2B model. So they aim other business as their customers. In terms of products and service, they serviced new encrypted MP3 format which makes them be able to sell music in their web sites. Also, they started to treat the music video contents which never treated on-line before. Finally, they launched ISPs billing systems for customers, which makes customers easily purchase their products.