UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 8-K


                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



       Date of Report (Date of earliest event reported): OCTOBER 14, 2005



                             MEDIACOM BROADBAND LLC
             (Exact name of Registrant as specified in its charter)


        DELAWARE                      333-72440                   06-1615412
(State of incorporation)        (Commission File No.)            (IRS Employer
                                                             Identification No.)

                              100 CRYSTAL RUN ROAD
                           MIDDLETOWN, NEW YORK 10941
                    (Address of principal executive offices)


                  Registrant's telephone number: (845) 695-2600


     Check the  appropriate  box below if the Form 8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the Registrant under any of the
following provisions:

     |_| Written  communications  pursuant to Rule 425 under the  Securities Act
(17 CFR 230.425)

     |_| Soliciting  material pursuant to Rule 14a-12 under the Exchange Act (17
CFR 240.14a-12)

     |_|  Pre-commencement  communications  pursuant to Rule 14d-2(b)  under the
Exchange Act (17 CFR 240.14d-2(b))

     |_|  Pre-commencement  communications  pursuant to Rule 13e-4(c)  under the
Exchange Act (17 CFR 240.13e-4(c))

ITEM 1.01 ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT See disclosure contained in Item 2.03 below, which is incorporated herein by reference. ITEM 2.03 CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT Mediacom Communications Corporation owns cable systems through two principal subsidiaries, Mediacom LLC and Mediacom Broadband LLC. The operating subsidiaries of Mediacom Broadband LLC (the "Registrant") have a bank credit facility (the "Broadband credit facility") that consists of a revolving credit commitment, a $300.0 million term loan (Term Loan A) and a $500.0 million term loan (Term Loan C), which are subject to commitment reductions and amortization, as applicable. On October 14, 2005, the Broadband credit facility was amended (i) to increase the revolving credit commitment from approximately $543.0 million to approximately $650.5 million, of which approximately $430.3 million is not subject to scheduled reductions, and (ii) to extend the final commitment date of the commitments not subject to reductions from March 31, 2010 to December 31, 2012. JPMorgan Chase Bank (the administrative agent of the Broadband credit facility), several of the lenders of the Broadband credit facility or their respective affiliates have in the past performed, and may in the future from time to time perform, investment banking, financial advisory, lending and/or commercial banking services for the Registrant and certain of its subsidiaries and affiliates, for which service they have in the past received, and may in the future receive, customary compensation and reimbursement of expenses.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: October 20, 2005 MEDIACOM BROADBAND LLC By: /s/ Mark E. Stephan --------------------------- Mark E. Stephan Executive Vice President, Chief Financial Officer and Treasurer