WESTWOOD ONE, INC. LIST OF SUBSIDIARIES WESTWOOD ONE RADIO, INC. WESTWOOD ONE RADIO NETWORKS, INC. WESTWOOD NATIONAL RADIO CORPORATION, INC. WESTWOOD ONE STATIONS GROUP, INC. WESTWOOD ONE STATIONS - NYC, INC. WESTWOOD ONE PROPERTIES, INC. METRO NETWORKS, INC. METRO NETWORKS COMMUNICATIONS, INC. METRO NETWORKS SERVICES, INC. WASHINGTON NEWS NETWORK, INC. METRO NETWORKS COMMUNICATIONS, LIMITED PARTNERSHIP EXHIBIT 22