Exhibit 3.74

AS AMENDED THROUGH JUNE 6, 2007

CERTIFICATE OF FORMATION

OF

DETROIT RADIO, LLC

1. The name of the limited liability company is Detroit Radio, LLC.

2. The address of the registered office and the name and the address of the registered agent of the limited liability company required to be maintained by Section 18-104 of the Delaware Limited Liability Company Act are Corporation Service Company, 2711 Centerville Road, Suite 400, Wilmington, DE 19808.

IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation of Detroit Radio, LLC this 7^th day of July, 2003.

/s/ Diane K. Austin

Diane K. Austin, Organizer