EXHIBIT 4.5 SUPPLEMENTAL INDENTURE ---------------------- SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as of August 30, 1999 among BI Acquisition, LLC, a Delaware limited liability company (the "New Guarantor"), a subsidiary of Muzak...Supplemental Indenture • September 14th, 1999 • Bi Acquisition LLC • Services-business services, nec • New York
EXHIBIT 3.21 BI ACQUISITION, LLC LIMITED LIABILITY COMPANY AGREEMENT Dated as of August 18, 1999 Table of Contents -----------------Limited Liability Company Agreement • September 14th, 1999 • Bi Acquisition LLC • Services-business services, nec • Delaware
