Document:

Exhibit 4.6

EXECUTION VERSION

LOCKUP
AGREEMENT

THIS LOCKUP AGREEMENT (this “Agreement”)
is made and entered into as of May 13, 2007, by and among Source Interlink
Companies, Inc., a Delaware corporation (“Source”), and
the undersigned stockholder (“Stockholder”)
of the company.

RECITALS

A.                                   Concurrently
with the execution of this Agreement, Source, Consumer Source Inc., a Delaware
corporation (“Seller”), and PRIMEDIA Inc., a
Delaware corporation, have entered into a Purchase Agreement (the “Purchase Agreement”), which provides for the purchase of
shares of the Company (the “Transaction”).  Capitalized terms used herein and not
otherwise defined have the respective meanings ascribed to them in the Purchase
Agreement.

B.                                     Stockholder
is the record and beneficial owner (as defined in Rule 13d-3 under the
Securities Exchange Act of 1934, as amended) of 17,685,568 outstanding shares
of common stock, par value $0.01 per share, of Source, all as set forth on the
signature page of this Agreement (collectively, the “AEC Shares”).

NOW, THEREFORE, the parties hereto agree as follows:

1.                                       With
respect to the AEC Shares, during the period from the date hereof until the
earlier of (a) the Closing and (b) the termination of the Purchase Agreement in
accordance with Section 9.01 thereof, the Stockholder agrees to not (i) offer
to sell, contract to sell, make any short sale of, enter into any hedging
arrangement with respect to, or otherwise sell, dispose of, distribute, loan,
gift, pledge, assign, encumber or grant any option or right with respect to,
any such AEC Shares or any interest therein or any security convertible into or
exchangeable or exercisable for any such AEC Shares or (ii) enter into any
agreement or understanding with respect to the foregoing.

2.                                       Non-Assignment.  The obligations set forth herein shall not be
assignable without the prior written consent of (a) Source or Stockholder, as
applicable, and (b) in each case, Parent and Seller, and the granting of such
consent in a given instance shall be solely in their sole discretion and, if
granted, shall not constitute a waiver of this requirement as to any subsequent
assignment.

3.                                       Confidentiality.  Other than as required by applicable law or
regulation, each of the parties agree that it will not, nor will it permit its
advisors or affiliates to, disclose to any person or entity the contents of
this letter agreement, other than to its advisors who are instructed to
maintain the confidentiality of this letter in accordance herewith.

4.                                       No
Personal Liability.  Notwithstanding
anything that may be expressed or implied in this letter agreement, each party
hereto, by its acceptance of the benefits hereof, covenants, agrees and
acknowledges that, no recourse hereunder or under any documents or

instruments delivered in
connection herewith shall be had against any officer, agent, employee,
director, partner, member, affiliate or assignee of Source or Stockholder,
whether by the enforcement of any assessment or by any legal or equitable
proceedings, or by virtue of any statute, regulation or other applicable law,
it being expressly agreed and acknowledged that no personal liability
whatsoever shall attach to, be imposed on, or otherwise be incurred by an
officer, agent or employee of Source or Stockholder or any director, officer,
employee, partner, member, affiliate or assignee of any of the foregoing, as
such for any obligations of Source or Stockholder under this letter agreement or
any documents or instruments delivered in connection herewith or for any claim
based on, in respect of, or by reason of, such obligations or their creation.

5.                                       Express
Third Party Beneficiaries.  Seller
and Parent shall be third party beneficiaries of this letter agreement and
shall be entitled to exercise the rights set forth in Section 1 and enforce the
terms of this letter agreement and any waiver, consent or amendment to this
letter agreement shall be null and void unless agreed to in writing in advance
by Seller, Purchaser and .

6.                                       Notices.  All communications with Purchaser and Seller
shall be governed by Section 10.04 of the Purchase Agreement.

7.                                       Source
Forbearance.  Source shall not
exercise its rights under Section 9.01 of the Purchase Agreement if either
Source or Stockholder is in material default under this letter agreement.

8.                                       Entire
Agreement.  This letter agreement,
the Purchase Agreement and the Additional Agreements (together with the
Schedules to the Purchase Agreement and the documents referred to therein)
contains, and are intended as, a complete statement of all of the terms of the
arrangements between the parties with respect to the matters provided for
herein, and supersedes any previous agreements and understandings between the
parties with respect to those matters provided however that the terms of the
Confidentiality Agreement dated February 22, 2007 (the “Confidentiality
Agreement”) shall remain in full force and effect.

9.                                       Governing
Law; Jurisdiction.  This letter
agreement shall be governed by, and construed and enforced in accordance with
the laws of the State of New York. 
Purchaser and Seller hereby irrevocably submit to the jurisdiction of
any New York state court or United States Federal Court sitting in New York
City (and any appellate court therefrom) over any action or proceeding arising
out of or relating to this letter agreement. 
Purchaser and Seller hereby irrevocably waive any objection they may
have to venue and the defense of an inconvenient forum to the maintenance of
such action or proceeding.

10.                                 Counterparts.  This letter agreement may be executed in two
(2) or more counterparts, each of which shall be deemed an original, and each
party thereto may become a party hereto by executing a counterpart hereof.  This letter agreement and any counterpart so
executed shall be deemed to be one and the same instrument.

 2
 

11.                                 No
Presumption.  This letter agreement
shall be construed without regard to any presumption or rule requiring
construction or interpretation against the party drafting.

12.                                 Specific
Performance.  The parties hereto
agree and acknowledge that money damages would not be an adequate remedy for
any breach of the provisions of this letter agreement and that, in addition to
pursuing any other available remedies, Source, Seller and Purchaser, may apply
to any court of law or equity of competent jurisdiction for specific
performance and/or injunctive relief (without posting a bond or other security)
in order to enforce or prevent any violation of the provisions of this letter
agreement.

(Remainder
of page intentionally left blank)

 3
 

If this letter is agreeable to you, please so indicate
by signing in the space indicated below.

	
  

  	
  Very truly yours,

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  AEC ASSOCIATES, LLC

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   /s/ Robert P. Bermingham

  
	
   

  	
   

  	
  Name:  Robert P. Bermingham

  
	
   

  	
   

  	
  Its:  Vice President

  
				

 

Accepted and agreed as of May 13, 2007.

SOURCE INTERLINK
COMPANIES, INC.

	
  By:

  	
  /s/ Douglas J. Bates

  	
   

  	
   

  
	
   

  	
  Name:  Douglas
  J. Bates

  	
   

  
	
   

  	
  Its:        General
  Counsel

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  CONSUMER SOURCE INC.

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Dean Nelson

  	
   

  	
   

  
	
   

  	
  Name:  Dean Nelson

  	
   

  
	
   

  	
  Its:        Chairman,
  President and CEO

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  PRIMEDIA INC.

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Dean Nelson

  	
   

  	
   

  
	
   

  	
  Name:  Dean Nelson

  	
   

  	
   

  
	
   

  	
  Its:        Chairman,
  President and CEO

  	
   

  

 

 4Exhibit 10.68

THE YUCAIPA
COMPANIES, LLC

9130 WEST SUNSET
BLVD.

LOS ANGELES,
CA  90069

May 13, 2007

Source Interlink
Companies

27500 Riverview Center Blvd.

Bonita Springs, Florida 34134

Ladies and Gentlemen:

We are pleased to provide you with this commitment in
connection with your contemplated purchase of PRIMEDIA Enthusiast Media Inc.  Reference is made to that certain Stock
Purchase Agreement, dated as of the date hereof (the “Purchase Agreement”),
by and between Consumer Source Inc., a Delaware corporation (“Seller”), PRIMEDIA
Inc., a Delaware corporation and Source Interlink Companies, Inc., a Delaware
corporation (“Source”). 
Capitalized terms used herein and not otherwise defined have the
respective meanings ascribed to them in the Purchase Agreement.

In consideration of the premises and mutual covenants,
agreements, obligations and conditions contained herein, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto, intending to be legally bound hereby, agree
as follows:

1.                                       Equity
Commitment.  If (a) the conditions
set forth in Section 6.01(a) and 6.01(b) of the Purchase Agreement have been
satisfied or waived and the Closing shall not have occurred in accordance with
Section 2.01 of the Purchase Agreement, (b) the Financing or Alternative
Financing, as the case may be, shall not be capable of consummation in an
amount sufficient to close the sale contemplated by the Purchase Agreement and
(c) Source would be capable of consummating the Financing or Alternative
Financing, as the case may be, if The Yucaipa Companies, LLC and its affiliates
(“Yucaipa”) purchased securities from Source, then Source shall sell and
Yucaipa shall purchase securities of Source for cash in an amount sufficient
for Source to consummate the Financing or Alternative Financing, as the case
may be, and close the sale contemplated by the Purchase Agreement, provided
that Yucaipa shall not be obligated to purchase securities or be liable for
damages, obligations or amounts in connection with or related to this Letter
Agreement to any party for more than $100 million in the aggregate.  The Yucaipa Companies, LLC and funds under
its control have $100 million in capital available for investment.  The terms of such securities shall be
established by a committee of the board of directors of Source consisting
solely of independent directors, but shall not have terms that would require a
vote of the stockholders of Source under law or the rules of the Nasdaq Stock
Market.

2.                                       Termination.  The obligations of Source and Yucaipa under
this letter agreement shall immediately terminate on the earlier of (a) the
Closing and (b) the termination of the Purchase Agreement in accordance with
Section 9.01 of the Purchase Agreement, except if Yucaipa or Source is in material
breach of this letter agreement.  Upon
and after such termination, the obligations of Source and Yucaipa under this
letter agreement shall forthwith become null and void and of no further effect
and there shall be no further obligation or liability on the part of any party
hereto.

3.                                       Non-Assignment.  The obligations set forth herein shall not be
assignable without the prior written consent of (a) Source or Yucaipa, as
applicable, and (b) in each case, Parent and Seller, and the granting of such
consent in a given instance shall be solely in their sole discretion and, if
granted, shall not constitute a waiver of this requirement as to any subsequent
assignment.

4.                                       Confidentiality.  Other than as required by applicable law or
regulation, each of the parties agree that it will not, nor will it permit its
advisors or affiliates to, disclose to any person or entity the contents of
this letter agreement, other than to its advisors who are instructed to
maintain the confidentiality of this letter in accordance herewith.

5.                                       No
Personal Liability.  Notwithstanding
anything that may be expressed or implied in this letter agreement, each party
hereto, by its acceptance of the benefits hereof, covenants, agrees and
acknowledges that, no recourse hereunder or under any documents or instruments
delivered in connection herewith shall be had against any officer, agent,
employee, director, partner, member, affiliate or assignee of Source or Yucaipa,
whether by the enforcement of any assessment or by any legal or equitable
proceedings, or by virtue of any statute, regulation or other applicable law,
it being expressly agreed and acknowledged that no personal liability
whatsoever shall attach to, be imposed on, or otherwise be incurred by an
officer, agent or employee of Source or Yucaipa or any director, officer,
employee, partner, member, affiliate or assignee of any of the foregoing, as
such for any obligations of Source or Yucaipa under this letter agreement or
any documents or instruments delivered in connection herewith or for any claim
based on, in respect of, or by reason of, such obligations or their creation.

6.                                       Express
Third Party Beneficiaries.  Seller
and Parent shall be third party beneficiaries of this letter agreement and shall
be entitled to exercise the rights set forth in Section 1 and enforce the terms
of this letter agreement and any waiver, consent or amendment to this letter
agreement shall be null and void unless agreed to in writing in advance by
Seller, Purchaser and Yucaipa.

7.                                       Notices.  All communications with Purchaser, Parent and
Seller shall be governed by Section 10.04 of the Purchase Agreement.

8.                                       Source
Forbearance.  Source shall not
exercise its rights under Section 9.01 of the Purchase Agreement if either Source
or Yucaipa is in material default under this letter agreement.

 2
 

9.                                       Entire
Agreement.  This letter agreement,
the Purchase Agreement and the Additional Agreements (together with the
Schedules to the Purchase Agreement and the documents referred to therein)
contains, and are intended as, a complete statement of all of the terms of the
arrangements between the parties with respect to the matters provided for
herein, and supersedes any previous agreements and understandings between the
parties with respect to those matters provided however that the terms of the
Confidentiality Agreement dated February 22, 2007 (the “Confidentiality
Agreement”) shall remain in full force and effect.

10.                                 Governing
Law; Jurisdiction.  This letter
agreement shall be governed by, and construed and enforced in accordance with
the laws of the State of New York. 
Purchaser and Seller hereby irrevocably submit to the jurisdiction of
any New York state court or United States Federal Court sitting in New York
City (and any appellate court therefrom) over any action or proceeding arising
out of or relating to this letter agreement. 
Purchaser and Seller hereby irrevocably waive any objection they may
have to venue and the defense of an inconvenient forum to the maintenance of
such action or proceeding.

11.                                 Counterparts.  This letter agreement may be executed in two
(2) or more counterparts, each of which shall be deemed an original, and each
party thereto may become a party hereto by executing a counterpart hereof.  This letter agreement and any counterpart so
executed shall be deemed to be one and the same instrument.

12.                                 No
Presumption.  This letter agreement
shall be construed without regard to any presumption or rule requiring
construction or interpretation against the party drafting.

13.                                 Specific
Performance.  The parties hereto
agree and acknowledge that money damages would not be an adequate remedy for
any breach of the provisions of this letter agreement and that, in addition to
pursuing any other available remedies, Source, Seller and Purchaser, may apply
to any court of law or equity of competent jurisdiction for specific
performance and/or injunctive relief (without posting a bond or other security)
in order to enforce or prevent any violation of the provisions of this letter agreement.

 3
 

If this letter is agreeable to you, please so indicate
by signing in the space indicated below.

	
  

  	
  Very truly yours,

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  THE YUCAIPA COMPANIES, LLC

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   /s/ Robert P.
  Bermingham

  	
   

  
	
   

  	
   

  	
  Name:  Robert
  P. Bermingham

  
	
   

  	
   

  	
  Its:  Vice
  President

  
					

 

Accepted and agreed as of May 13, 2007.

SOURCE INTERLINK
COMPANIES, INC.

	
  By:

  	
  /s/ Michael R. Duckworth

  	
   

  	
   

  
	
   

  	
  Name:

  	
  Michael R.
  Duckworth

  	
   

  
	
   

  	
  Its:

  	
  Chairman of the
  Board

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  CONSUMER SOURCE INC.

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Dean Nelson

  	
   

  	
   

  
	
   

  	
  Name:

  	
  Dean Nelson

  	
   

  
	
   

  	
  Title:

  	
  Chairman, President and CEO

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
  PRIMEDIA INC.

  	
   

  
	
   

  	
   

  
	
   

  	
   

  
	
  By:

  	
  /s/ Dean Nelson

  	
   

  	
   

  
	
   

  	
  Name:

  	
  Dean Nelson

  	
   

  
	
   

  	
  Title:

  	
  Chairman, President and CEO

  	
   

  
						

 

 4

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