EXHIBIT 99.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, S. Leslie Flegel, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report on Form 10-K of the Source Interlink Companies, Inc for the fiscal year ended January 31, 2003 fully complies with the requirements of section 31(a) or 15(d) of Securities Exchange Act of 1934 and that information contained in such Annual Report on Form 10-K fairly presents, in all material respects, the financial condition and result of operations of the Source Interlink Companies, Inc. April 30, 2003 By: /s/ S. Leslie Flegel ---------------------------------------- S. Leslie Flegel Chairman and Chief Executive Officer I, Marc Fierman, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report on Form 10-K of the Source Interlink Companies, Inc for the fiscal year ended January 31, 2003 fully complies with the requirements of section 31(a) or 15(d) of Securities Exchange Act of 1934 and that information contained in such Annual Report on Form 10-K fairly presents, in all material respects, the financial condition and result of operations of the Source Interlink Companies, Inc. April 30, 2003 By: /s/ Marc Fierman ---------------------------------------- Marc Fierman Chief Financial Officer