Exhibit 4.18

 Exhibit 4.18
 AMENDMENT AND ALLONGE TO SENIOR SECURED NOTE
 

 This AMENDMENT AND ALLONGE (this “Amendment”), effective as of April 30, 2015, is by and among ONSTREAM MEDIA CORPORATION (the “Company”), INFINITE CONFERENCING, INC. (“ICI”), ENTERTAINMENT DIGITAL NETWORK, INC. (“EDNI”), AV ACQUISITION, INC. (“AAI”), ONSTREAM CONFERENCING CORPORATION (“OCC”), MEDIA ON DEMAND, INC. (“MOD”), HOTEL VIEW CORPORATION (“HVC”), OSM ACQUISITION INC. (“OSM”) and AUCTION VIDEO JAPAN, INC. (“AVJI”) (the Company, ICI, EDNI, AAI, OCC, MOD, HVC, OSM and AVJI shall be referred to collectively as the “Borrowers”) and SIGMA OPPORTUNITY FUND II, LLC (the “Holder”).
 

 RECITALS
 

 1. 
 Borrowers issued an Amended and Restated Senior Subordinated Secured Convertible Note, dated December 31, 2014 (the “Note”), in favor of Holder in the original aggregate principal amount of $1,358,000 (as the same may be further amended from time to time, the “Note”).
 

 2. 
 Pursuant to a certain Agreement, dated April 30, 2015, the Borrowers and Holder have agreed to further amend the Note as herein provided. 
 

 AMENDMENT
 

 For good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree that the Note is further amended as follows:
 

 
 (1) 
 The definition of “Maturity Date” in Section 3.1 of the Note is hereby amended by changing “June 30, 2015” to “October 15, 2015.”
 

 (2) 
 Section 4.1 of the Note (“Right to Convert”) is hereby amended by changing “June 30, 2015” to “October 15, 2015.”
 

 This Amendment hereby modifies the following language from the last part of the first paragraph of the Note “(i) repay the indebtedness of William Castellano, Pembroke Park Lakes and CCJ Trust described in Schedule 4(j) to the Note Purchase Agreement (unless such lenders agree to execute subordination agreements in form and substance reasonably acceptable to Holder, including waiver of principal payments during the term of this Note)” to delete the references to William Castellano and Pembroke Park Lakes. 
 

 Except as specifically amended hereby, the Note shall remain in full force and effect as issued.  An executed original of this Amendment shall be attached to the original Note and shall constitute collectively one and a singular instrument, and one shall not be negotiated, transferred or conveyed without the other.  All references to the Note in any of the Transaction Documents (as defined in the Note) shall be deemed to refer to the Note, as amended by this Amendment, and as the same may be further amended, supplemented or modified in accordance with its terms by the parties from time to time.  This Amendment shall be governed by and construed in accordance with the laws of the State of New York.  This Amendment may be executed in counterparts, each of which shall be deemed an original and all of which together shall constitute one and the same instrument.
 

 [Signature Pages Follow]
 


 
 IN WITNESS WHEREOF, the Borrowers have executed this Amendment and Allonge as of the date first written above.
 

 ONSTREAM MEDIA CORPORATION
 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 INFINITE CONFERENCING, INC.
 

  By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 ENTERTAINMENT DIGITAL NETWORK, INC.
 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 AV ACQUISITION, INC.

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 ONSTREAM CONFERENCING CORPORATION
 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 MEDIA ON DEMAND
 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 


 
 HOTEL VIEW CORPORATION
 

 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 OSM ACQUISITION INC.
 

 

 By: /s/ Randy S. Selman
       Name: Randy Selman
       Title: President
 

 AUCTION VIDEO JAPAN, INC.
 

 

 By: /s/ Randy S. Selman
       Name: Randy Selman
             Title: President
 

 

 

 Accepted and Agreed to this
 30 day of April, 2015
 

 SIGMA OPPORTUNITY FUND II, LLC
 By: Sigma Capital Advisors, LLC, its 
managing member
 

 

 By: /s/ Thom Waye
  
Thom Waye, Manager