Document:

<PAGE>

                                                                     Exhibit 4.4

                     AMENDED AND RESTATED VOTING AGREEMENT

          THIS AMENDED AND RESTATED VOTING AGREEMENT (the "Agreement") is made
and entered into as of February 15, 2000, by and among iBEAM BROADCASTING
CORPORATION, a Delaware corporation (the "Company"), certain of the holders of
the Company's Series A Preferred Stock (the "Series A Stock"), Series B
Preferred Stock (the "Series B Stock"), Series C Preferred Stock ("Series C
Stock"), Series D Preferred Stock (the "Series D Stock") and Series E Preferred
Stock (the "Series E Stock" and together with the Series A, B, C and D Stock,
the "Preferred Stock") listed on the Schedule of Investors attached as
Schedule A hereto (the "Investors"), and certain holders of Common Stock of the
----------
Company (the "Participating Founders") listed on the Schedule of Participating
Founders attached as Schedule B hereto. The Company, the Participating Founders
                     ----------
and the Investors are individually each referred to herein as a "Party" and are
collectively referred to herein as the "Parties." The Company's Board of
Directors is referred to herein as the "Board."

                                  WITNESSETH:
                                  ----------

          WHEREAS, certain of the Investors (the "Existing Investors") hold
shares of the Company's Series A Stock, Series B Stock, Series C Stock and
Series D Stock and/or shares of Common Stock issued upon conversion thereof and
are parties to that certain Voting Agreement dated as of October 14, 1999 among
the Company, the Participating Founders and such Existing Investors (the "Prior
Agreement");

          WHEREAS, the Existing Investors hold at least a majority of the voting
securities held by the parties to the Prior Agreement, and desire to amend,
restate and supercede the Prior Agreement in its entirety;

          WHEREAS, certain of the Investors (the "New Investors") are parties to
the Series E Preferred Stock Purchase Agreement of even date herewith among the
Company and the New Investors (the "Series E Agreement"), which provides that as
a condition to the closing of the sale of the Series E Stock pursuant thereto,
this Agreement must be executed and delivered by such New Investors, Existing
Investors, the Participating Founders and the Company;

          WHEREAS, the Participating Founders are the beneficial owners of the
number of shares of Common Stock of the Company set forth opposite his/her name
on Schedule B hereto and the Participating Founders and Existing Investors wish
   ----------
to provide further inducement to the New Investors to purchase shares of Series
E Stock pursuant to the Series E Agreement; and

          WHEREAS, the Company's Restated Certificate of Incorporation provides
that (a) holders of shares of the Company's Series A Stock, voting as a single
class, shall elect one (1) member of the Board (the "Series A Director") and (b)
holders of shares of the Company's Series B Stock, voting together as a single
class, shall elect one (1) member of the Board (the "Series B Director");
<PAGE>

          NOW, THEREFORE, in consideration of the mutual promises and covenants
set forth herein, the Company, the Participating Founders and the Investors
hereby agree as follows:

          1.  Agreement to Vote.  Each Investor, as a holder of Preferred Stock,
              -----------------
hereby agrees on behalf of itself and any transferee or assignee of any such
shares of the Preferred Stock, to hold all of the shares of Preferred Stock
registered in its name (and any securities of the Company issued with respect
to, upon conversion of, or in exchange or substitution of the Preferred Stock,
and any other voting securities of the Company subsequently acquired by such
Investor) (hereinafter collectively referred to as the "Investor Shares")
subject to, and to vote the Investor Shares at a regular or special meeting of
stockholders (or by written consent) in accordance with, the provisions of this
Agreement. Each Participating Founder, as a holder of Common Stock of the
Company, hereby agrees on behalf of itself and any transferee or assignee of any
such shares of Common Stock, to hold all of such shares of Common Stock and any
other securities of the Company acquired by such Participating Founder in the
future (and any securities of the Company issued with respect to, upon
conversion of, or in exchange or substitution for such securities) (the "Founder
Shares") subject to, and to vote the Founder Shares at a regular or special
meeting of stockholders (or by written consent) in accordance with, the
provisions of this Agreement.

          2.  Election of Directors.
              ---------------------

              (a)  In any election of directors of the Company, the Parties
shall each vote at any regular or special meeting of stockholders (or by written
consent) such number of shares of Common Stock and Preferred Stock then owned by
them (or as to which they then have voting power) as may be necessary to elect
one (1) director who shall be the Company's chief executive officer.

              (b)  In any election of directors of the Company, the Parties
holding shares of Series A Stock shall each vote at any regular or special
meeting of stockholders (or by written consent) such number of shares of Series
A Stock then owned by them (or as to which they then have voting power) as may
be necessary to elect one (1) director (the "Series A Director"), nominated by
Crosspoint Venture Partners 1997 ("Crosspoint") so long as Crosspoint owns at
least fifty percent (50%) of the Common Stock issued or issuable upon conversion
of the Series A Stock originally purchased by Crosspoint pursuant to that
certain Series A Preferred Stock Purchase Agreement dated April 16, 1998.

              (c)  In any election of directors of the Company, the Parties
holding shares of Series B Stock shall each vote at any regular or special
meeting of stockholders (or by written consent) such number of shares of Series
B Stock then owned by them (or as to which they then have voting power) as may
be necessary to elect one (1) director (the "Series B Director"), nominated by
Accel Partners and its affiliated funds ("Accel") so long as Accel owns at least
fifty percent (50%) of the Common Stock issued or issuable upon conversion of
the Series B Stock purchased by such Investor pursuant to the Series B Stock
Purchase Agreement dated June 8, 1998.

              (d)  In any election of directors of the Company, the Parties
shall each vote at any regular or special meeting of stockholders (or by written
consent) such number of

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voting securities of the Company then owned by them (or as to which they then
have voting power) as may be necessary to elect any additional directors that
are approved by a majority of the Board (the "Industry Directors").

          3.  Removal.  Any director of the Company may be removed from the
              -------
board in the manner allowed by law and the Company's Certificate of
Incorporation and Bylaws, but with respect to a director designated pursuant to
subsections 2(a) through 2(d) above, only upon the vote or written consent of
the majority of the stockholders entitled to designate such director.

          4.  Vacancy.  Any vacancy occurring to a director designated pursuant
              -------
to subsections 2(a) through 2(d) above shall only be filled according to the
vote or written consent of the stockholders entitled to designate such director.

          5.  Voting on Certain Transactions.
              ------------------------------

              (a)  Each of Microsoft Corporation, Sony Corporation of America,
Covad Communications Investment Corp., Covad Communications Group, Inc., Pacific
Century Cyberworks and America Online, Inc. (the "Strategic Investors") shall
take such action as may be required so that all securities of the Company
entitled to vote in connection with a Corporate Transaction (as defined below)
beneficially owned by such Investor and/or any of their controlled affiliates
("Voting Securities") are voted on all Corporate Transactions in the same manner
as voted by a majority of the Board. For purposes of this Agreement, Corporate
Transaction shall mean (i) the acquisition of the Company by another entity by
means of any transaction or series of related transactions that results in the
transfer of fifty percent (50%) or more of the outstanding voting power of the
Company or (ii) the sale of all or substantially all of the assets of the
Company, provided that no transferee of such voting power or assets is (A) a
director, officer or affiliate of the Company or (B) an associate of such a
director, officer or affiliate (with affiliate and associate having the meaning
set forth in Rule 12b-2 under the Securities Exchange Act of 1934, as amended
("Rule 12b-2"). For purposes of this Agreement, an entity will be deemed a
controlled affiliate of a Strategic Investor if the Strategic Investor controls
such entity within the meaning of Rule 12b-2.

              (b)  Each Strategic Investor and its controlled affiliates as
holders of shares of Voting Securities, shall be present, in person or by proxy,
at all meeting of stockholders of the Company so that all shares of Voting
Securities beneficially owned by such Strategic Investor and/or its controlled
affiliates may be counted for the purpose of determining the presence of a
quorum at such meetings.

              (c)  Each Investor and its controlled affiliates, as holders of
shares of Voting Securities, shall not exercise any dissenters rights under
applicable law at any time for such Corporate Transactions, if applicable;
provided, however, that if any agreement governing the terms of a Corporate
Transaction requires an Investor to provide an indemnity in connection with the
Investor's transfer or exchange of capital stock in the Company, the terms of
such agreement shall provide that such indemnity shall be provided ratably by
all stockholders of the Company, in proportion to their percentage interest in
the outstanding capital stock of the Company, assuming conversion of all
outstanding Preferred Stock into Common Stock; provided further that the maximum
aggregate dollar amount of the indemnity payable by any Investor

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<PAGE>

shall not exceed the amount of consideration received by such Investor pursuant
to the terms of the Corporate Transaction.

              (d)  Each Investor and it controlled affiliates, as holders of
shares of Voting Securities, shall refrain from transferring any securities of
the Company, the acquiror, or any other applicable company during any period
prohibited by then applicable pooling of interests accounting treatment rules,
whether before or after the sale of the Company.

              (e)  No Strategic Investor nor any of its controlled affiliates
shall deposit any Voting Securities in a voting trust or subject any Voting
Securities to any arrangement or agreement with respect to the voting of such
Voting Securities except for this Agreement.

          6.  Legend on Share Certificates. Each certificate representing any
              ----------------------------
Shares shall be endorsed by the Company with a legend reading substantially as
follows:

          "The Shares evidenced hereby are subject to a Voting Agreement (a copy
          of which may be obtained upon written request from the issuer), and by
          accepting any interest in such shares the person accepting such
          interest shall be deemed to agree to and shall become bound by all the
          provisions of said Voting Agreement."

          7.   Covenants of the Company.  The Company agrees to use its best
               ------------------------
efforts to ensure that the rights granted hereunder are effective and that the
Parties hereto enjoy the benefits thereof. Such actions include, without
limitation, the use of the Company's best efforts to cause the nomination and
election of the directors as provided above. The Company will not, by any
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be performed hereunder by the Company, but will at all times in
good faith assist in the carrying out of all of the provisions of this Agreement
and in the taking of all such actions as may be necessary, appropriate or
reasonably requested by the holders of a majority of the outstanding voting
securities held by the Parties hereto assuming conversion of all outstanding
securities in order to protect the rights of the Parties hereunder against
impairment.

          8.   No Liability for Election of Recommended Directors.  Neither the
               --------------------------------------------------
Company, the Participating Founders, the Investors, nor any officer, director,
stockholder, partner, employee or agent of such Party, makes any representation
or warranty as to the fitness or competence of the nominee of any Party
hereunder to serve on the Company's Board by virtue of such Party's execution of
this Agreement or by the act of such Party in voting for such nominee pursuant
to this Agreement.

          9.   Grant of Proxy.  Should the provisions of this Agreement be
               --------------
construed to constitute the granting of proxies, such proxies shall be deemed
coupled with an interest and are irrevocable for the term of this Agreement.

          10.  Specific Enforcement.  It is agreed and understood that monetary
               --------------------
damages would not adequately compensate an injured Party for the breach of this
Agreement by any Party, that this Agreement shall be specifically enforceable,
and that any breach or threatened breach of this Agreement shall be the proper
subject of a temporary or permanent injunction or

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<PAGE>

restraining order. Further, each Party hereto waives any claim or defense that
there is an adequate remedy at law for such breach or threatened breach.

          11. Execution by the Company.  The Company, by its execution in the
              ------------------------
space provided below, agrees that it will cause the certificates evidencing the
shares of Common Stock and Preferred Stock to bear the legend required by
Section 6 herein, and it shall supply, free of charge, a copy of this Agreement
to any holder of a certificate evidencing shares of capital stock of the Company
upon written request from such holder to the Company at its principal office.
The parties hereto do hereby agree that the failure to cause the certificates
evidencing the shares of Common Stock and Preferred Stock to bear the legend
required by Section 6 herein and/or failure of the Company to supply, free of
charge, a copy of this Agreement as provided under this Section 6 shall not
affect the validity or enforcement of this Agreement.

          12.  Captions.  The captions, headings and arrangements used in this
               --------
Agreement are for convenience only and do not in any way limit or amplify the
terms and provisions hereof.

          13.  Notices.  Any notice required or permitted by this Agreement
               -------
shall be in writing and shall be sent prepaid registered or certified mail,
return receipt requested, addressed to the other Party at the address shown
below or at such other address for which such Party gives notice hereunder. Such
notice shall be deemed to have been given three (3) days after deposit in the
mail.

          14. Term.
              ----

              (a)  Except for the provisions of Section 5 hereof, this Agreement
shall terminate and be of no further force or effect upon the earliest to occur
of (i) the consummation of the Company's sale of its Common Stock or other
securities pursuant to a registration statement under the Securities Act of
1933, as amended, (other than a registration statement relating either to sale
of securities to employees of the Company pursuant to its stock option, stock
purchase or similar plan or a SEC Rule 145 transaction), (ii) the consummation
of the acquisition of the Company by another entity by means of any transaction
or series of related transactions (including, without limitation, any
reorganization, merger or consolidation) that results in the transfer of fifty
percent (50%) or more of the outstanding voting power of the Company or a sale
of all or substantially all of the assets of the Company, (iii) the written
consent of the holders of a majority of the shares held by the Parties hereto,
or (iv) October 12, 2009.

              (b)  The provisions of Section 5 of this Agreement with respect to
each Strategic Investor or Investor shall terminate and be of no further force
or effect upon the later to occur of: (i) the consummation of the sale of
securities pursuant to a bona fide, firmly underwritten public offering of
shares of common stock of the Company registered under the Securities Act of
1933, as amended, or (ii) such Strategic Investor or Investor and its controlled
affiliates in the aggregate own Voting Securities representing less than 5% of
the then outstanding voting power of the Company.

                                       5
<PAGE>

          15. Manner of Voting.  The voting of shares pursuant to this Agreement
              ----------------
may be effected in person, by proxy, by written consent, or in any other manner
permitted by applicable law.

          16. Amendments and Waivers.  Any term hereof may be amended and the
              ----------------------
observance of any term hereof may be waived (either generally or in a particular
instance and either retroactively or prospectively) only with the written
consent of the holders of a majority of the then outstanding voting securities
held by the Party or Parties for whose benefit such term has been included in
this Agreement. Any amendment or waiver so effected shall be binding upon the
Parties hereto.

          17. Stock Splits, Stock Dividends, etc. In the event of any issuance
              ----------------------------------
of shares of the Company's voting securities hereafter to any of the Parties
hereto (including, without limitation, in connection with any stock split, stock
dividend, recapitalization, reorganization, or the like), such shares shall
become subject to this Agreement and shall be endorsed with the legend set forth
in Section 5.

          18. Severability.  Whenever possible, each provision of this Agreement
              ------------
shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be held to be
prohibited by or invalid under applicable law, such provision shall be
ineffective only to the extent of such prohibition or invalidity, without
invalidating the remainder of such provision or the remaining provisions of this
Agreement.

          19. Binding Effect.  In addition to any restriction on transfer that
              --------------
may be imposed by any other agreement by which any Party hereto may be bound,
this Agreement shall be binding upon the Parties, their respective heirs,
successors and assigns and to such additional individuals or entities that may
become stockholders of the Company and that desire to become Parties hereto;
provided that for any such transfer to be deemed effective, the transferee shall
have executed and delivered an Adoption Agreement substantially in the form
attached hereto as Exhibit A. Upon the execution and delivery of an Adoption
Agreement by any transferee reasonably acceptable to the Company, such
transferee shall be deemed to be a Party hereto as if such transferee's
signature appeared on the signature pages hereto. By their execution hereof or
any Adoption Agreement, each of the Parties hereto appoints the Company as its
attorney-in-fact for the purpose of executing any Adoption Agreement which may
be required to be delivered hereunder.

          20. Governing Law.  This Agreement shall be governed by and construed
              -------------
in accordance with the laws of the State of Delaware, without regard to
conflicts of law principles thereof.

          21. Entire Agreement.  This Agreement is intended to be the sole
              ----------------
agreement of the Parties as it relates to this subject matter and does hereby
supersede all other agreements of the Parties relating to the subject matter
hereof.

          22.  Counterparts.  This Agreement may be executed in two or more
               ------------
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                                       6
<PAGE>

          23. Arbitration.  Any controversy between the Parties hereto involving
              -----------
any claim arising out of or relating to the termination of this Agreement, will
be submitted to and be settled by final and binding arbitration in Santa Clara,
California, in accordance with the then current Commercial Arbitration Rules of
the American Arbitration Association (the "AAA"), and judgment upon the award
rendered by the arbitrators may be entered in any court having jurisdiction
thereof. Such arbitration shall be conducted by three (3) arbitrators chosen by
the Company, the Investors, and the Participating Founders, or failing such
agreement, an arbitrator experienced in the sale of similarly-sized companies
appointed by the AAA. There shall be limited discovery prior to the arbitration
hearing as follows: (a) exchange of witness lists and copies of documentary
evidence and documents relating to or arising out of the issues to be
arbitrated, (b) depositions of all party witnesses, and (c) such other
depositions as may be allowed by the arbitrators upon a showing of good cause.
Depositions shall be conducted in accordance with the California Code of Civil
Procedure, the arbitrator(s) shall be required to provide in writing to the
Parties the basis for the award or order of such arbitrator(s), and a court
reporter shall record all hearings, with such record constituting the official
transcript of such proceedings.

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<PAGE>

          IN WITNESS WHEREOF, the Parties have executed this Agreement as of the
date first above written.

                              iBEAM BROADCASTING CORPORATION

                              ____________________________________________
                              Peter Desnoes
                              President and Chief Executive Officer

                    Address:  645 Almanor Avenue
                              Suite 100
                              Sunnyvale, CA  94086

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                              INVESTORS:

                              CROSSPOINT VENTURE PARTNERS 1997

                              _____________________________________________
                              Richard Shapero
                              General Partner

                    Address:  2925 Woodside Road
                              Woodside, CA  94062

                              ACCEL VI L.P.

                              By: Accel VI Associates L.L.C

                                  Its General Partner

                              _____________________________________________
                              Managing Member

                    Address:  428 University Avenue  Accel Partners
                              Palo Alto, CA  94301   One Palmer Square
                              Attn: J. Peter Wagner  Princeton, NJ 08542
                                                     Attn: G. Carter
                                                     Sednaoui

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                              ACCEL INTERNET FUND II L.P.

                              By: Accel Internet Fund II Associates L.L.C.
                                  Its General Partner

                              _____________________________________________
                              Managing Member

                    Address: 428 University Avenue   Accel Partners
                             Palo Alto, CA  94301    One Palmer Square
                             Attn: J. Peter Wagner   Princeton, NJ 08542
                                                     Attn: G. Carter
                                                     Sednaoui

                             ACCEL KEIRETSU VI L.P.

                             By: Accel Keiretsu VI Associates L.L.C.
                             Its General Partner

                             ______________________________________________
                             Managing Member

                    Address: 428 University Avenue  Accel Partners
                             Palo Alto, CA  94301   One Palmer Square
                             Attn: J. Peter Wagner  Princeton, NJ 08542
                                                    Attn: G. Carter
                                                    Sednaoui

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                              ACCEL INVESTORS `98 L.P.
                              By: Accel Investors `98 Associates L.L.C.
                                  Its General Partner

                              _____________________________________________
                              Managing Member

                    Address:  428 University Avenue  Accel Partners
                              Palo Alto, CA  94301   One Palmer Square
                              Attn: J. Peter Wagner  Princeton, NJ 08542
                                                     Attn: G. Carter
                                                     Sednaoui

                              MEDIA TECHNOLOGY VENTURES, L.P.

                              By:__________________________________________
                              Title:_______________________________________

                    Address:  1 First Street
                              Los Altos, CA  94022

                              MEDIA TECHNOLOGY VENTURES
                              ENTREPRENEURS FUND, L.P.

                              By:__________________________________________
                              Title:_______________________________________

                    Address:  1 First Street
                              Los Altos, CA  94022

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                              ANNABEL J. MONTGOMERY, as Trustee of the ANNABEL
                              MONTGOMERY REVOCABLE TRUST DATED FEBRUARY 7, 1991,
                              and JAMES W. MONTGOMERY, as tenants in common,
                              each as to an undivided one-half interest.

                              _____________________________________________
                              Annabel J. Montgomery, Trustee

                              _____________________________________________
                              James W. Montgomery

                    Address:  100 Wilshire Blvd., Suite 400
                              Santa Monica, CA  90401

                              MONTGOMERY & ASSOCIATES , L.P.

                              By:__________________________________________
                              Title:_______________________________________

                    Address:  100 Wilshire Blvd., Suite 400
                              Santa Monica, CA  90401

                              CULBARA, INC.

                              By:__________________________________________
                              Title:_______________________________________

                    Address:  100 Wilshire Blvd., Suite 400
                              Santa Monica, CA  90401

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                               J.P. MORGAN DIRECT VENTURE CAPITAL
                               INSTITUTIONAL INVESTORS LLC

                               By:_________________________________________
                               Name:_______________________________________
                               Title:______________________________________

                    Address:   522 5TH Avenue.
                               New York, New York  10036

                               J.P. MORGAN DIRECT VENTURE
                               CAPITAL PRIVATE INVESTORS LLC

                               By:_________________________________________
                               Name:_______________________________________
                               Title:______________________________________

                     Address:  522 5TH Avenue.
                               New York, New York  10036

                               INTEL CORPORATION

                               By:_________________________________________
                               Name:_______________________________________
                               Title:______________________________________

                    Address:   2200 Mission College Blvd.
                               Santa Clara, CA  95052-8119

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                              MICROSOFT CORPORATION

                              By:__________________________________________
                              Name:________________________________________
                              Title:_______________________________________

                    Address:  One Microsoft Way
                              Redmond, WA 98052-6399

                              COVAD COMMUNICATIONS
                              INVESTMENT CORP.

                              By:__________________________________________
                              Name:________________________________________
                              Title:_______________________________________

                              CRESCENDO WORLD FUND LLC

                              By:__________________________________________
                              Name:________________________________________
                              Title:_______________________________________

                              EAGLE VENTURES WF, LLC

                              By:__________________________________________
                              Name:________________________________________
                              Title:_______________________________________

                              LUNN-iBEAM, LLC

                              By:__________________________________________
                                     LUNN PARTNERS, LLC
                                     Managing Member

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                     PETER B. DESNOES, IRA A/C
                                     774-91015 GUARANTEE & TRUST
                                     COMPANY, TTEE

                                     ______________________________________

                                     ROBERT C. HAWK

                                     ______________________________________

                           Address:  7585 S. Biscay Street
                                     Aurora, CO  80016

                                     LEN GROSSI

                                     ______________________________________

                           Address:  5555 Melrose Avenue
                                     Hollywood, CA  90038

                                     FRED SEEGAL

                                     ______________________________________

                           Address:  31 West 52nd Street
                                     27th Floor
                                     New York, New York  10019

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                     WS INVESTMENT COMPANY 99B

                                     By:___________________________________
                                     Name:_________________________________
                                     Title:________________________________

                          Address:   650 Page Mill Road
                                     Palo Alto, CA  94304

                                     CHRIS DIER

                                     ______________________________________

                                     BRUCE D. LAWLER

                                     ______________________________________

                                     TOM GILLIS

                                     ______________________________________

                                     JEREMY ZULLO

                                     ______________________________________

                                     NILS LAHR

                                     ______________________________________

                                     DAVID STREHLOW

                                     ______________________________________

                                     BOB DAVIS

                                     ______________________________________

                                     PHILIP ROSEDALE

                                     ______________________________________

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                     CYBER COMMERCE LIMITED

                                     By:___________________________________
                                     Name:_________________________________
                                     Title:________________________________

                                     AMERICA ONLINE, INC.

                                     By:___________________________________
                                     Name:_________________________________
                                     Title:________________________________

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                COMDISCO, INC.

                                By:____________________________________
                                Title:_________________________________

                      Address:  100 Hamilton Ste. 104A     6111 North River Road
                                Palo Alto, CA  94301       Rosemont, IL 60018
                                Attn: Christine Ferra      Attn: Venture Group

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                    SONY CORPORATION OF AMERICA

                                    By:____________________________________
                                    Name:__________________________________
                                    Title:_________________________________

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT

<PAGE>

                              PARTICIPATING FOUNDERS:

                              WILMOT LIVING TRUST U/D/T dated April 18,
                              1995

                              _____________________________________________
                              Robert Wilmot, Trustee

                              _____________________________________________
                              Mary J. Wilmot, Trustee

                    Address:  13,333 La Cresta Drive
                              Los Altos, CA  94022

                              _____________________________________________
                              Navin Chaddha

                    Address:  14600 NE 42nd Place, #N-402
                              Bellevue, WA  98007

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                  SCHEDULE A

                               LIST OF INVESTORS

                   Accel VI L.P.

                   Accel Internet Fund II L.P.

                   Accel Keiretsu VI L.P.

                   Accel Investors `98 L.P.

                   Media Technology Ventures, L.P.

                   Media Technology  Ventures Entrepreneurs Fund, L.P.

                   Annabel J. Montgomery
                   As Trustee of the Annabel J. Montgomery Revocable Trust
                   Dated February 7, 1991 and James W. Montgomery

                   Culbara, Inc.

                   Montgomery & Associates, L.P.

                   J.P. Morgan Direct Venture Capital Institutional Investors,
                   LLC

                   J.P. Morgan Direct Venture Capital Private Investors LLC

                   Microsoft Corporation

                   Covad Communications Investment Corp.

                   Crescendo World Fund, LLC

                   Eagle Ventures WF, LLC

                   Intel Corporation

                   Lunn-iBEAM, LLC

                   Peter Desnoes, IRA A/C 774-91015 GUARANTEE & TRUST
                   COMPANY, TTEE

                   Robert C. Hawk

                   Len Grossi

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                   Fred Seegal

                   WS Investment Company 99B

                   Chris L. Dier

                   Bruce D. Lawler

                   Tom Gillis

                   Jeremy Zullo

                   Nils Lahr

                   David Strehlow

                   Philip Rosendale

                   Comdisco, Inc.

                   Sony Corporation of America

                   Cyber Commerce Limited

                   America Online, Inc.

           SIGNATURE PAGE FOR AMENDED AND RESTATED VOTING AGREEMENT
<PAGE>

                                  SCHEDULE B

                        LIST OF PARTICIPATING FOUNDERS:

WILMOT LIVING TRUST U/D/T dated April 18, 1995
Navin Chaddha

           SIGNATURE PAGE FOR AMENDED AND  RESTATED VOTING AGREEMENT
<PAGE>

                                   EXHIBIT A

                               ADOPTION AGREEMENT
                               ------------------

          This Adoption Agreement ("Adoption Agreement") is executed by the
undersigned (the "Transferee") pursuant to the terms of that certain Voting
Agreement dated as of October 13, 1999 (the "Agreement") by and among the
Company and certain of its Stockholders.  Capitalized terms used but not defined
herein shall have the respective meanings ascribed to such terms in the
Agreement.  By the execution of this Adoption Agreement, the Transferee agrees
as follows:

          (a)  Acknowledgment. Transferee acknowledges that Transferee is
               --------------
acquiring certain shares of the capital stock of the Company (the "Stock"),
subject to the terms and conditions of the Agreement.

          (b)  Agreement.  Transferee (i) agrees that the Stock acquired by
               ---------
Transferee shall be bound by and subject to the terms of the Agreement, and (ii)
hereby adopts the Agreement with the same force and effect as if Transferee were
originally a Party thereto.

          (c)  Notice.  Any notice required or permitted by the Agreement shall
               ------
be given to Transferee at the address listed beside Transferee's signature
below.

          EXECUTED AND DATED this ______ day of _________________, ____.

                                 TRANSFEREE:

                                 By:_______________________________________
                                     Name and Title

                                 Address:__________________________________
                                 Fax:______________________________________
Accepted and Agreed:

iBEAM BROADCASTING CORPORATION

By:___________________________
Title:_________________________<PAGE>

                                                                     Exhibit 4.6

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AS AMENDED.  THESE
SECURITIES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE
ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THE SECURITIES UNDER SAID
ACT OR LAWS OR AN OPINION OF COUNSEL SATISFACTORY TO THE CORPORATION THAT SUCH
REGISTRATION IS NOT REQUIRED.

                         iBEAM BROADCASTING CORPORATION

                           STOCK SUBSCRIPTION WARRANT

                                                               February 25, 2000

      1.  General.
          -------
          (a)  THIS CERTIFIES that, for value received, AMERICA ONLINE, INC.
("AOL") is entitled to subscribe for and purchase from iBEAM BROADCASTING
CORPORATION, a Delaware corporation (the "Corporation"), at any time or from
time to time during the period (the "Exercise Period") commencing on the date of
a Stipulated Event and ending on the fourth anniversary of the date hereof, on
the terms and subject to the provisions hereinafter set forth, a number of
shares (subject to adjustment as provided herein) (the "Warrant Shares") of
fully paid and non-assessable shares of Common Stock, $.0001 par value, of the
Corporation determined by dividing $5,000,000 by the Exercise Price.

This Warrant is being issued pursuant to a System Services Agreement dated as of
January 27, 2000 (the "Agreement"), between the Corporation and AOL.  All terms
used but not defined herein shall have the meanings set forth in the Agreement.

          (b)  This Warrant shall become exercisable as to all of the Warrant
Shares immediately upon the occurrence of a Stipulated Event. As used herein,
the term "Stipulated Event" shall mean the earlier of (a) a Corporate
Transaction (as hereinafter defined) or (b) three years from the date hereof or
(c) a termination of the Agreement, except for a termination by the Corporation
for material breach by AOL. "Corporate Transaction" means (A) any consolidation
or merger of the Corporation with or into any other corporation or other entity,
other than any merger or consolidation resulting in the holders of the capital
stock of the Corporation entitled to vote for the election of directors
immediately prior to the transaction holding a majority of the capital stock of
the surviving or resulting corporation or other entity entitled to vote for the
election of directors, (B) any person or entity (including any affiliates
thereof) becoming the holder of a majority of the capital stock of the
Corporation entitled to vote for the election of directors, (C) any sale or
other disposition by the Corporation of all or substantially all of its assets
or capital stock or (D) a public offering (the "IPO") for the account of the
Corporation of shares of capital stock of the Corporation pursuant to a
registration statement filed under the Securities Act of 1933, as amended (the
"Securities Act") with gross proceeds of at least $20,000,000.
<PAGE>

          (c)  The Exercise Price shall be (x) the price per share of the
Corporation's Common Stock to the public in the IPO ( less per share underwriter
commissions and discounts), or (y) if a Corporate Transaction other than an IPO
occurs, or a Corporate Transaction does not occur by February 25, 2003, shall be
$13.75 per share subject to adjustment as provided in Section 4.

     2.  Exercise of Warrant.  The rights represented by this Warrant may be
         -------------------
exercised by the holder hereof, as to those Warrant Shares for which this
Warrant is then exercisable as determined in accordance with Section 1, in whole
or in part, at any time or from time to time during the Exercise Period, by the
surrender of this Warrant (properly endorsed) at the office of the Corporation
at 645 Almanor Avenue, Suite 100 Sunnyvale, CA 94086, or at such other agency or
office of the Corporation in the United States of America (the "Designated
Office") as it may designate by notice in writing to the holder hereof at the
address of such holder appearing on the books of the Corporation, and by payment
(either in cash, by check, by cancellation of indebtedness and/or in shares of
capital stock of the Corporation valued at Fair Market Value (as hereinafter
defined) on the date of such exercise) to the Corporation of the Warrant Price
for each Warrant Share being purchased.  In the event of the exercise of the
rights represented by this Warrant, a certificate or certificates for the
Warrant Shares so purchased, registered in the name of the holder, and if this
Warrant shall not have been exercised for all of the Warrant Shares, a new
Warrant, registered in the name of the holder hereof, of like tenor to this
Warrant, shall be delivered to the holder hereof within a reasonable time, not
exceeding ten days, after the rights represented by this Warrant shall have been
so exercised.  The person in whose name any certificate for Warrant Shares is
issued upon exercise of this Warrant shall for all purposes be deemed to have
become the holder of record of such shares on the date on which the Warrant was
surrendered and payment of the Warrant Price and any applicable taxes was made,
irrespective of the date of delivery of such certificate, except that, if the
date of such surrender and payment is a date when the stock transfer books of
the Corporation are closed, such person shall be deemed to have become the
holder of such shares at the close of business on the next succeeding date on
which the stock transfer books are open.

     3.   Exchange of Warrant.
          -------------------
          (a)  In addition to, and independent of, the rights of the holder of
this Warrant set forth in Section 2 hereof, the holder hereof may at any time or
from time to time after a Stipulated Event elect to receive, without the payment
by the holder of any additional consideration, that number of Warrant Shares
determined as hereinafter provided in this Section 3 by the surrender of this
Warrant or any portion hereof to the Corporation, accompanied by an executed
Notice of Exchange in substantially the form thereof attached hereto (the "Net
Issue Election"). Thereupon, the Corporation shall issue to the holder hereof
such number of fully paid and nonassessable Warrant Shares as is computed using
the following formula:

                                  X = Y (A-B)
                                      -------
                                       A

where X =  the number of Warrant Shares to be issued to the holder pursuant to
this Section 3.

                                       2
<PAGE>

     Y =  the number of Warrant Shares covered by this Warrant in respect of
          which the Net Issue Election is made pursuant to this Section 3.

     A =  the Fair Market Value (as hereinafter defined) of one Warrant Share
          determined at the time the Net Issue Election is made pursuant to this
          Section 3 (the "Determination Date").

     B =  the Warrant Price in effect under this Warrant at the time the Net
          Issue Election is made pursuant to this Section 3.

For purposes of the above calculation, "Fair Market Value" of one Warrant Share
as of the Determination Date shall mean:

                (i)    (A) if the Common Stock of the Corporation is not then
     traded on a national securities exchange, the average of the closing prices
     quoted on the National Association of Securities Dealers, Inc. Automated
     Quotation National Market System, if applicable, or the average of the last
     bid and asked prices of the Common Stock quoted in the over-the-counter-
     market or (B) if the Common Stock is then traded on a national securities
     exchange, the average of the high and low prices of the Common Stock listed
     on the principal national securities exchange on which the Common Stock is
     so traded, in each case for the twenty (20) trading days immediately
     preceding the Determination Date or, if such date is not a business day on
     which shares are traded, the next immediately preceding trading day;

                (ii)   in the event of a Warrant Exchange in connection with a
     Corporate Transaction, the value per share of Common Stock received or
     receivable by each holder thereof (assuming for purposes of this
     determination, in the case of a sale of assets, the Corporation is
     liquidated immediately following such sale and the consideration paid to
     the Corporation is immediately distributed to its stockholders); and

                (iii)  in all other circumstances, the fair market value per
share of Common Stock as determined by a nationally recognized independent
investment banking firm jointly selected by the Corporation and the holder of
this Warrant or, if such selection cannot be made within five business days
after delivery of the Notice of Exchange referred to above, by a nationally
recognized independent investment banking firm selected by the American
Arbitration Association then obtaining.

The closing of any Warrant Exchange shall take place at the offices of the
Corporation on the date specified in the Notice of Exchange (the "Exchange
Date"), which shall be not less than five and not more than 30 days after the
delivery of such Notice.  At such closing, the Corporation shall issue and
deliver to the holder or its designee a certificate or certificates for the
Warrant Shares to be issued upon such Warrant Exchange, registered in the name
of the holder or such designee, and if such Warrant Exchange shall not have been
for all Warrant Shares, a new Warrant, registered in the name of the holder, of
like tenor to this Warrant for the number of shares still subject to this
Warrant following such Warrant Exchange.

                                       3
<PAGE>

     4.   Adjustment of Warrant Price.
          ---------------------------

          (a)  The Warrant Price shall be subject to adjustment from time to
time as follows:

               (i)     If, at any time during the Exercise Period, the number of
     shares of Common Stock outstanding is increased by a stock dividend payable
     in shares of Common Stock or by a subdivision or split-up of shares of
     Common Stock, then, following the record date fixed for the determination
     of holders of Common Stock entitled to receive such stock dividend,
     subdivision or split-up, the Warrant Price shall be appropriately decreased
     and the number of shares of Common Stock issuable upon exercise of this
     Warrant shall be appropriately increased, in each case in proportion to
     such increase in outstanding shares.

               (ii)    If, at any time during the Exercise Period, the number of
     shares of Common Stock outstanding is decreased by a combination of the
     outstanding shares of Common Stock, then, following the record date for
     such combination, the Warrant Price shall be appropriately increased and
     the number of shares of Common Stock issuable upon exercise of this Warrant
     shall be appropriately decreased, in each case, in proportion to such
     decrease in outstanding shares.

               (iii)  Whenever the Warrant Price shall be adjusted as provided
in this Section 4 the Corporation shall forthwith file, at the office of the
Corporation or any transfer agent designated by the Corporation for the Common
Stock, a statement, signed by its chief financial officer, showing in detail the
facts requiring such adjustment and the adjusted Warrant Price. The Corporation
shall also cause a copy of such statement to be sent by first-class certified
mail, return receipt requested, postage prepaid, to each holder of a Warrant at
his or its address appearing on the Corporation's records. Where appropriate,
such copy may be given in advance and may be included as part of a notice
required to be mailed under the provisions set forth immediately below.

          (b)  In the event the Corporation shall take any action of the types
described in Section 4 or Section 12, the Corporation shall give notice to each
holder of a Warrant in the manner set forth herein, which notice shall specify
the record date, if any, with respect to any such action and the date on which
such action is to take place. Such notice shall also set forth such facts with
respect thereto as shall be reasonably necessary to indicate the effect of such
action (to the extent such effect may be known at the date of such notice) on
the Warrant Price then in effect and the number, kind or class of shares or
other securities or property which shall be delivered or purchasable upon the
occurrence of such action or deliverable upon exercise of this Warrant. In the
case of any action which would require the fixing of a record date, the
Corporation shall use reasonable efforts to provide such notice at least 20 days
prior to the date so fixed, and in case of all other action, the Corporation
shall use reasonable efforts to provide such notice at least 30 days prior to
the taking of such proposed action. Failure to give such notice, or any defect
therein, shall not affect the legality or validity of any such action.

     5.  Adjustment of Warrant Shares. Upon each adjustment of the Warrant Price
         ----------------------------
as provided in Section 4, the holder hereof shall thereafter be entitled to
subscribe for and purchase,

                                       4
<PAGE>

at the Warrant Price resulting from such adjustment, the number of Warrant
Shares equal to the product of (i) the number of Warrant Shares existing prior
to such adjustment and (ii) the quotient obtained by dividing (A) the Warrant
Price existing prior to such adjustment by (B) the new Warrant Price resulting
from such adjustment. No fractional shares of Common Stock shall be issued as a
result of any such adjustment, and any fractional shares resulting from the
computations pursuant to this paragraph shall be eliminated without
consideration.

     6.  Covenants as to Common Stock.  The Corporation covenants and agrees
         ----------------------------
that all shares of Common Stock that may be issued upon the exercise of the
rights represented by this Warrant, will, upon issuance, be validly issued,
fully paid and non-assessable and free from all taxes, liens and charges with
respect to the issuance thereof. The Corporation further covenants and agrees
that the Corporation will from time to time take all such action as may be
requisite to assure that the stated or par value per share of Common Stock is at
all times equal to or less than the then effective Warrant Price per share of
Common Stock issuable upon exercise of this Warrant. The Corporation further
covenants and agrees that the Corporation will at all times have authorized and
reserved, free from preemptive rights, a sufficient number of shares of Common
Stock to provide for the exercise of the rights represented by this Warrant. If
and so long as the Common Stock issuable upon the exercise of the rights
represented by this Warrant is listed on any national securities exchange, the
Corporation will, if permitted by the rules of such exchange, list and keep
listed on such exchange, upon official notice of issuance, all shares of such
capital stock.

     7.  No Shareholder Rights.  This Warrant shall not entitle the holder
         ---------------------
hereof to any voting rights or other rights as a shareholder of the Corporation.

     8.  Restrictions on Transfer of the Warrant Shares.
         ----------------------------------------------

         (a)  The holder of this Warrant acknowledges that neither this Warrant
nor the Warrant Shares have been registered under the Securities Act and the
holder of this Warrant agrees that no sale, transfer, assignment, hypothecation
or other disposition of the Warrant Shares shall be made (except for transfers
to any entity controlled by or under common control with AOL, as evidenced by
ownership of 50% or more of the outstanding voting stock of such entity) in the
absence of (i) current registration statement under the Securities Act as to the
Warrant Shares and the registration or qualification of the Warrant Shares under
any applicable state securities laws is then in effect or (ii) an opinion of
counsel reasonably satisfactory to the Corporation to the effect that such
registration or qualification is not required. The Warrant Shares shall also be
subject to the restrictions on transfer set forth in the Amended and Restated
Investors' Rights Agreement dated as of February __, 2000 (the "Rights
Agreement") by and among the Corporation and the investors listed on Schedule A
thereto, as such agreement may be heretofore amended.

         (b)  It is understood that the certificates evidencing the Warrant
Shares may bear one or all of the following legends:

              (i)   "These securities have not been registered under the
     Securities Act of 1933, as amended. They may not be sold, offered for sale,
     pledged or hypothecated in the absence of a registration statement in
     effect with respect to the securities under such

                                       5
<PAGE>

     Act or an opinion of counsel satisfactory to the Company that such
     registration is not required or unless sold pursuant to Rule 144 of such
     Act."

              (ii)  Any legend required by the laws of the State of California,
     including any legend required by the California Department of Corporations
     and Sections 417 and 418 of the California Corporations Code.

              (iii) "These securities are subject to a market-standoff of 180
     days in connection with the Company's initial public offering."

     9.  Restrictions on Transfer of the Warrant.
         ---------------------------------------

         (a)  Except as expressly permitted in the following sentence, this
Warrant and the rights hereunder are not transferable by the holder hereof.
Notwithstanding the foregoing, this Warrant may be assigned to any entity
controlled by or under common control with (as evidenced by ownership of 50% or
more of the outstanding voting stock of such entity) AOL. Subject to compliance
with the restrictions on transfer set forth in this Section 9, each transfer of
this Warrant and all rights hereunder, in whole or in part, shall be registered
on the books of the Corporation to be maintained for such purpose, upon
surrender of this Warrant at the Designated Office, together with a written
assignment of this Warrant in the form attached hereto duly executed by the
holder or its agent or attorney. Upon such surrender and delivery, the
Corporation shall execute and deliver a new Warrant or Warrants in the name of
the assignee or assignees and in the denominations specified in such instrument
of assignment, and shall issue to the assignor a new Warrant evidencing the
portion of this Warrant not so assigned, if any. All Warrants issued upon any
assignment of Warrants shall be the valid obligations of the Corporation,
evidencing the same rights, and entitled to the same benefits as the Warrants
surrendered upon such registration of transfer or exchange.

     (b)  It is understood that each Warrant shall be stamped or otherwise
imprinted with a legend in substantially the following form:

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
     INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AS
     AMENDED.  THESE SECURITIES MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR
     HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO
     THE SECURITIES UNDER SAID ACT OR LAWS OR AN OPINION OF COUNSEL SATISFACTORY
     TO THE CORPORATION THAT SUCH REGISTRATION IS NOT REQUIRED.

     10.  Market Stand-Off Agreement.  The holder hereof hereby agrees that it
will not, without the prior written consent of the managing underwriter, during
the period commencing on the date of the final prospectus relating to the
Corporation's initial public offering and ending on the date specified by the
Corporation and the managing underwriter (such period not to exceed one hundred
eighty (l80) days) (i) lend, offer, pledge, sell, contract to sell, sell any
option or contract to purchase, purchase any option or contract to sell, grant
any option, right or warrant to purchase, or otherwise transfer or dispose of,
directly or indirectly, any shares of Common Stock

                                       6
<PAGE>

or any securities convertible into or exercisable or exchangeable for Common
Stock (whether such shares or any such securities are then owned by the holder
hereof or are thereafter acquired), or (ii) enter into any swap or other
arrangement that transfers to another, in whole or in part, any of the economic
consequences of ownership of the Common Stock, whether any such transaction
described in clause (i) or (ii) above is to be settled by delivery of Common
Stock or such other securities, in cash or otherwise. The underwriters in
connection with the Corporation's initial public offering are intended third
party beneficiaries of this Section 10 and shall have the right, power and
authority to enforce the provisions hereof as though they were a party hereto.
In order to enforce the foregoing covenant, the Corporation may impose stop-
transfer instructions with respect to the Warrant Shares until the end of such
period

     11.  Registration Rights.  The holder shall have the registration rights
          -------------------
set forth in the Rights Agreement with respect to the Warrant Shares.

     12.  Reorganizations, Etc.  In case, at any time during the Exercise
          --------------------
Period, of any capital reorganization, of any reclassification of the stock of
the Corporation (other than a change in par value or from par value to no par
value or from no par value to par value or as a result of a stock dividend or
subdivision, split-up or combination of shares), or the consolidation or merger
of the Corporation with or into another corporation (other than a consolidation
or merger in which the Corporation is the continuing operation and which does
not result in any change in the Common Stock) or of the sale of all or
substantially all the properties and assets of the Corporation as an entirety to
any other corporation, this Warrant shall, after such reorganization,
reclassification, consolidation, merger or sale, be exercisable for the kind and
number of shares of stock or other securities or property of the Corporation or
of the corporation resulting from such consolidation or surviving such merger or
to which such properties and assets shall have been sold to which such holder
would have been entitled if he had held the Common Stock issuable upon the
exercise hereof immediately prior to such reorganization, reclassification,
consolidation, merger or sale. In any such reorganization or other action or
transaction described above, appropriate provision shall be made with respect to
the rights and interests of the holder of this Warrant to the end that the
provisions hereof (including, without limitation, provisions for adjustments of
the Warrant Price and of the number of shares purchasable and receivable upon
the exercise of this Warrant) shall thereafter be applicable, as nearly as may
be, in relation to any shares of stock, securities or assets thereafter
deliverable upon the exercise hereof. The Corporation will not effect any such
consolidation, merger or sale unless, prior to the consummation thereof, the
successor corporation or entity (if other than the Corporation) resulting from
such transaction or the corporation or entity purchasing such assets shall
assume by written instrument, executed and mailed or delivered to the registered
holder hereof at the last address of such holder appearing on the books of the
Corporation, the obligation to deliver to such holder such shares of stock,
securities or assets as, in accordance with the foregoing provisions, such
holder may be entitled to purchase.

     13.  Lost, Stolen, Mutilated or Destroyed Warrant.  If this Warrant is
          --------------------------------------------
lost, stolen, mutilated or destroyed, the Corporation may, on such terms as to
indemnity or otherwise as it may in its discretion impose (which shall, in the
case of a mutilated Warrant, include the surrender thereof), issue a new Warrant
of like denomination and tenor as the Warrant so lost, stolen, mutilated or
destroyed. Any such new Warrant shall constitute an original contractual

                                       7
<PAGE>

obligation of the Corporation, whether or not the allegedly lost, stolen,
mutilated or destroyed Warrant shall be at any time enforceable by anyone.

     14.  Modification and Waiver.  This Warrant and any provision hereof may be
          -----------------------
changed, waived, discharged or terminated only by an instrument in writing
signed by the party against which enforcement of the same is sought.

     15.  Notices.  All notices, advices and communications to be given or
          -------
otherwise made to any party to this Agreement shall be deemed to be sufficient
if contained in a written instrument delivered in person or by telecopier or
duly sent by first class registered or certified mail, return receipt requested,
postage prepaid, or by overnight courier, or by electronic mail, with a copy
thereof to be sent by mail (as aforesaid) within 24 hours of such electronic
mail, addressed to such party at the address set forth below or at such other
address as may hereafter be designated in writing by the addressee to the
addresser listing all parties:

          If to the Corporation, to:

               iBEAM Broadcasting Corporation
               645 Almanor Avenue, Suite 100
               Sunnyvale, California 94086
               Attention:  General Counsel
               Telecopier:  (408) 524-0567

     and

          If to AOL as follows:

               America Online, Inc.
               22000 AOL Way
               Dulles, Virginia  20166
               Attention:  General Counsel
               Telecopier:  (703) 265-2208

Or to such other address as the party to whom notice is to be given may have
furnished to the other parties hereto in writing in accordance herewith.  Any
such notice or communication shall be deemed to have been delivered and received
(i) in the case of personal delivery or delivery by telecopier, on the date of
such deliver, (ii) in the case of nationally-recognized overnight courier, on
the next business day after the date when sent and (ii) in the case of mailing,
on the third business day following that on which the piece of mail containing
such communication is posted.  As used in this Section 15, "business day" shall
mean any day other than a day on which banking institutions in the State of New
York are legally closed for business.

     16.  Binding Effect on Successors; Survival.  This Warrant shall be binding
          --------------------------------------
upon any corporation succeeding the Corporation by merger, consolidation or
acquisition of all or substantially all of the Corporation's assets. All of the
obligations of the Corporation relating to the Common Stock issuable upon the
exercise of this Warrant shall survive the exercise and termination of this
Warrant. All of the covenants and agreements of the Corporation shall inure to
the benefit of the successors of AOL.

                                       8
<PAGE>

     17.  Descriptive Headings and Governing Law.  The description headings of
          --------------------------------------
the several sections and paragraphs of this Warrant are inserted for convenience
only and do not constitute a part of this Warrant. This Warrant shall be
construed and enforced in accordance with, and the rights of the parties shall
be governed by, the laws of the State of Delaware.

     18.  Fractional Shares.  No fractional shares shall be issued upon exercise
          -----------------
of this Warrant. The Corporation shall, in lieu of issuing any fractional share,
pay the holder entitled to such fraction a sum in cash equal to such fraction
multiplied by the then Fair Market Value of one Warrant Share.

                                     * * *

                                       9
<PAGE>

     IN WITNESS WHEREOF, the undersigned have caused this Warrant and Warrant
Agreement to be executed by their duly authorized officers on the date first
above written.

                              iBEAM BROADCASTING CORPORATION

                              By:__________________________________________
                                 Name:
                                 Title:

ATTEST: ____________________
        Secretary

                              AMERICA ONLINE, INC.

                              By:__________________________________________
                                 Name:
                                 Title:

                                       10
<PAGE>

                             FORM OF SUBSCRIPTION

     The undersigned, the holder of the Warrant, hereby irrevocably elects to
exercise the purchase rights represented by such Warrant for, and to purchase
thereunder, __________________ shares of common stock, $.0001 par value of iBEAM
Broadcasting Corporation and herewith makes payment of $__________________
therefor, and requests that the certificates for such shares be issued in the
name of and delivered to,
__________________________________________________________________, whose
address is .

Dated:__________________________

                               _______________________________
                               (Signature)

                               _______________________________
                               (Address)

                                       11
<PAGE>

                               NOTICE OF EXCHANGE

                        (To be executed by the Holder in
                        order to exchange the Warrant.)

     The undersigned hereby irrevocably elects to exchange this Warrant into
____________________ shares (the foregoing number constituting the number of
Warrant Shares to be issued pursuant to Section 3 of this Warrant) of common
stock, $.0001 par value of iBEAM Broadcasting Corporation, minus any shares to
be deducted from the foregoing number in accordance with the terms of this
Warrant, according to the conditions thereof.  The undersigned desires to
consummate such exchange on .

Dated:____________________

                              __________________________________________
                              Name of Holder:

                              By:_______________________________________

                                       12
<PAGE>

                                ASSIGNMENT FORM

          FOR VALUE RECEIVED the undersigned registered owner of this Warrant
hereby sells, assigns and transfers unto the Assignee named below all of the
rights of the under-signed under this Warrant, with respect to the number of
shares of Common Stock set forth below:

Name and Address of Assignee                       No. of Shares of
----------------------------                       Common Stock
                                                   ------------

and does hereby irrevocably constitute and appoint ________ _____________
attorney-in-fact to register such transfer onto the books of iBEAM Broadcasting
Corporation maintained for the purpose, with full power of substitution in the
premises.

Dated:____________________      Print Name:___________________________
                                Signature:____________________________
                                Witness:______________________________

NOTICE:   The signature on this assignment must correspond with the name as
          written upon the face of this Warrant in every particular, without
          alteration or enlargement or any change whatsoever.

                                       13

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