The Importance of Convergence Development in American Radio Stations: Building a Multimedia Content Managing System, Case Study of CBS Radios CMS (Speaker: Dean; translator: Zhang) 1. Important projects in the development of media convergence strategies for U.S. radio stations; the establishment of multimedia content managing system 2. Introduction of CMS 3. CMS of on-the-air programs in CBS Radio 4. Multimedia CMS in CBS Radio 5. The combination of the abovementioned two systems